Search Results — 2000 specimen records retrieved (1592 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA278285  Abies concolor Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-13 49347 San Bernardino E. Mojave Desert, New York Mountains: summit ridge at upper end of huge N-facing canyon. 2195 Comment
  SEINET221032  Abies concolor Robert F. Thorne, C. W. Tilforth; L. DeBuhr et. al. 1977-5-13 49347 San Bernardino East Mojave Desert New York Mountains Comment
  RSA0025754  Abronia latifolia Robert F. Thorne, P. C. Everett 1963-4-21 31628 San Luis Obispo At S end of Morro Bay between bay and ocean. Comment
  RSA287833  Abronia maritima Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-29 49022 Santa Barbara Santa Rosa Island. Near China Camp, W of arroyo mouth 6 Comment
  RSA302531  Abronia nana var. covillei Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53156 San Bernardino Along Caribou Creek in Van Dusen Canyon, 1.8 mi. North of junction with Hwy 38 in Big Bear City. 2165 Comment
  RSA0025849  Abronia turbinata Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-4 41193 Mono Inyo National Forest: Dry roadside along Hot Creek, S of Cashbaugh Ranch. 2119 Comment
  UC1532795  Abronia umbellata Robert F. Thorne 1968-6-7 37755 San Luis Obispo between Oceano Guadalupe (Sand dunes w of Oso Flaco Lake); Oso Flaco Dunes 10 Comment
  RSA187931  Acacia pycnantha R. F. Thorne 1966-6-1 36462 Los Angeles Santa Catalina Island, along Pebbly Beach Drive SE of Avalon. 46 Comment
  RSA178061  Acaena pinnatifida var. californica Robert F. Thorne 1965-4-21 34418 Marin Point Reyes National Seashore. 8 Comment
  SBBG21975  Achlys triphylla R. F. Thorne, P. C. Everett 1964-10-20 Mendocino 2.2 mi up Navarro River Valley from Hwy 1 Comment
  RSA225676  Achnatherum coronatum R. F. Thorne, A. C. Gibson 1971-5-22 39719 Los Angeles Angeles National Forest: Fish Canyon, on bluff face. 259 Comment
  RSA381267  Achnatherum occidentale subsp. occidentale R. F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47837 a San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  RSA334943  Achnatherum parishii subsp. parishii R. F. Thorne, B. Prigge, D. C. Michener, S. Meyer, Walter Wisura 1978-5-25 51713 San Bernardino Providence Mountains: Middle Gilroy Canyon. 1372 Comment
  CHSC106532  Achnatherum speciosum R. F. Thorne; W. Wisura, B. Busenburg, R. K. Benjamin 1983-5-6 55596 Inyo Mojave Desert; Northcentral Mojave Desert Region: Death Valley Nat'l Monument, Funeral Mtns, upper end of Red amphitheatre, down canyon perhaps 1.5 mi. Foot of rocky, dolomitic slope. 1189 Comment
  RSA249795  Achnatherum speciosum R. F. Thorne 1973-5-11 43485 Los Angeles 1/4-1/2 mile N of Bob's Gap, N slope of Holcomb ridge, ca. 2.5 miles due S of Llano 1159 Comment
  CAS-BOT-BC198620  Acmispon argyraeus Robert F. Thorne; W. Wisura; C. Davidson; B. Prigge 1977-5-29 49260 San Bernardino Caruthers canyon, E. Mojave desert, New York Mts. 1737 Comment
  RSA226695  Aconitum columbianum var. columbianum Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-3 41169 Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, along Cold Water Creek. 2744 Comment
  RSA788092  Acourtia microcephala R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49626 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  RSA177862  Adenostoma fasciculatum var. fasciculatum Robert F. Thorne, Percy C. Everett 1965-5-10 34442 Los Angeles Black Jack Mt., few hundred feet below summit; Santa Catalina Island 488 Comment
  RSA188325  Adenostoma fasciculatum var. fasciculatum Robert F. Thorne, Percy C. Everett 1965-6-22 34899 Los Angeles Santa Catalina Island. Upper end of Avalon Canyon along road 183 Comment
  SEINET3868322  Adiantum jordanii K. Thorne, D. Moss 1986-3-26 4275 Alameda Mt. Hamilton W slope, Arroyo Mocho Mines Road, 22 miles SSE of Livermore.; 0 713 Comment
  RSA225659  Ageratina adenophora R. F. Thorne 1971-5-22 39758 Los Angeles Angeles National Forest; Fish Canyon 396 Comment
  RSA303682  Agoseris grandiflora var. grandiflora R. F. Thorne, C. W. Tilforth, et al. 1979-7-12 53398 San Bernardino North end of Lake Gregory 1387 Comment
  RSA306673  Agoseris heterophylla var. heterophylla R. F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52725 Santa Barbara San Miguel Island. Near airstrip on west end of island 122 Comment
  RSA191488  Agoseris retrorsa R. F. Thorne, Lindsay Smith 1966-5-28 36390 San Bernardino Rocky ledges near Sheep Spring 1054 Comment
  RSA249712  Agrostis capillaris R. F. Thorne, P. Everett 1965-8-8 35247 Humboldt N edge of Eureka, E of Hwy in weedy land-fill 5 Comment
  RSA233574  Agrostis exarata R. F. Thorne, C. W. Tilforth, et al. 1972-6-29 42121 San Bernardino San Gabriel Mountains, San Bernardino National Forest: San Sevaine Cow Camp 1454 Comment
  RSA250373  Agrostis exarata R. F. Thorne, J. Dourley 1967-10-3 37283 Los Angeles Mt. Baden-Powell: Lamel Spring 2378 Comment
  RSA334292  Agrostis exarata R. F. Thorne, Leila Schultz, T. P. Krantz 1980-10-3 54859 San Bernardino San Bernardino National Forest, along lower Holcomb Creek where crossed by road N from Fawnskin, N of Delamar Mountain, W of Hitchcock Ranch. 2195 Comment
  RSA730022  Agrostis exarata R. F. Thorne, Walter Wisura, D. C. Michener, Jim Shevock 1979-9-5 53776 Tulare Moses Mountain. 2165 Comment
  CAS-BOT-BC139357  Agrostis idahoensis Robert F. Thorne; J. Dourley 1967-10-10 37359 Los Angeles San Gabriel Mountains. Angeles National Forest. 1.5 mile east of Dawson Saddle. 2331 Comment
  RSA228965  Agrostis idahoensis R. F. Thorne 1971-8-25 41313 Los Angeles San Gabriel Mountains, Angeles National Forest: At Windy Spring on N slope of Mt. Islip. 2256 Comment
  RSA229114  Agrostis idahoensis R. F. Thorne, C. W. Tilforth, John Dourley 1969-7-29 38886 Los Angeles San Gabriel Mountains, Angeles National Forest: near Lodgepole Picnic area at headwaters of Dorr Canyon, N slope of Throop Peak, above Angeles Crest Highway., 1.2 mi. SE of Dawson Saddle 2332 Comment
  CATA2453  Agrostis pallens Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-28 48949 Santa Barbara Santa Rosa Island: South Side near old military base at Johnsons Lee 30 Comment
  UC1532904  Agrostis perennans Robert F. Thorne, L. DeBuhr, C. Davidson, and C. W. Tilforth 1976-7-15 47839 San Bernardino ca 1.5 mi due s Big Bear Lake w end (e of Bluff Lake); San Bernardino Mts., Bluff Lake 2316 Comment
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Nov 21 2010
  RSA334211  Agrostis scabra R. F. Thorne, R. K. Benjamin, T. P. Krantz 1980-9-9 54737 San Bernardino San Bernardino National Forest: Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area. 2744 Comment
  RSA225787  Agrostis stolonifera R. F. Thorne, Selwyn Everist 1971-7-31 41131 San Bernardino San Gabriel Mountains, Angeles National Forest: Mt. Baldy Notch 2378 Comment
  RSA177864  Alchemilla occidentalis Robert F. Thorne, Percy C. Everett 1965-5-11 34672 Los Angeles Santa Catalina Island. Near road to Hay Press. 457 Comment
  RSA190957  Alchemilla occidentalis Robert F. Thorne, R. C. Rollins, D. Propst, R. Carolin 1967-3-19 36765 Los Angeles Santa Catalina Island. Lower end of Toyon Canyon. 46 Comment
  RSA247809  Aliciella latifolia R. F. Thorne, C. W. Tilforth, et al. 1973-3-8 42490 Inyo Death Valley National Monument: c. 1/4 mi N of Beatty Jct. -46 Comment
  RSA252014  Aliciella latifolia R. F. Thorne 1973-4-28 43221 San Bernardino Providence Mountains, canyon below Cornfield Springs, 10.9 road miles SE of Kelso. 1067 Comment
  CAS-BOT-BC332737  Alisma triviale R. F. Thorne; Larry E. DeBuhr 1975-8-22 46969 Modoc North edge of Likely along south fork of Pit River 1356 Comment
  RSA791691  Allium Robert F. Thorne, Stan T. Blake 1965-6-4 34721 Fresno Above King s River Canyon, 4 miles W of Boyden Cave. 1037 Comment
  CAS-BOT-BC131921  Allium Robert F. Thorne; C. W. Tilforth 1971-5-25 39656 Fresno 4.9 mi E of Auberry along crest of Bald Mt., slopes above Bald Mill Creek Comment
  RSA225878  Allium burlewii Robert F. Thorne, C. W. Tilforth, John Dourley 1971-7-28 41052 San Bernardino San Gabriel Mountains, San Bernardino National Forest: summit ridge of Dawson Peak 2912 Comment
  RSA310964  Allium dichlamydeum Robert F. Thorne, Percy C. Everett 1963-6-9 32236 San Mateo On top of San Bruno Mountain. 335 Comment
  RSA229028  Allium lacunosum var. davisiae Robert F. Thorne, C. W. Tilforth 1971-6-30 40777 Los Angeles 1.6 mi. below Alder Saddle 1584 Comment
  RSA229213  Allium lacunosum var. davisiae Robert F. Thorne, C. W. Tilforth 1971-6-30 40799 Los Angeles San Gabriel Mountains, Angeles National Forest: S Fork of Little Rock Creek,1.8 miles below Alder Saddle in Pinyon Flats area. 1555 Comment
  RSA337845  Allium parryi Robert F. Thorne, C. W. Tilforth, John Little 1979-6-14 53064 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end, on S side, W of Big Bear City 2058 Comment
  SEINET8467246 Image available Allium peninsulare R. F. Thorne, M. Z. Thorne 1968-6-8 37725 Ventura Lower end of Long Grade Canyon, c. 0.5 mi east of Camarillo State Hospital 76 Comment
  SEINET12048485  Allium peninsulare R. F. Thorne 1963-1 31816 Kern 2 mi E of Onxy on Hwy. 178 Comment
  CAS-BOT-BC132045  Allium peninsulare var. peninsulare Robert F. Thorne; A. C. Gibson 1971-5-22 39757 Los Angeles San Gabriel Mts., Angeles National Forest; Fish Canyon 396 Comment
  CATA2084  Allium praecox Robert F. Thorne, John Dourley, Walter Wisura, et al. 1979-4-24 52543 Santa Barbara Santa Cruz Island: On plateau at Fraser Point north-west tip of island 15 Comment
  RSA232809  Allium praecox Robert F. Thorne 1966-4-16 36059 Los Angeles San Clemente Island: Canyon below Lemon Tank near dump, S of Nanny, NE side of island 183 Comment
  RSA280997  Allium validum Robert F. Thorne 1969-7-22 39774 Inyo Sierra Nevada, E slope, Onion Valley. 2774 Comment
  RSA287809  Allophyllum gilioides R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-28 s.n. Santa Barbara Santa Rosa Island. Box Canyon. 76 Comment
  UCD118002  Allophyllum glutinosum Robert F. Thorne; P. Everett 1965-6-22 34853 Los Angeles Santa Catalina Island: Renton Mine area. 243 Comment
  OBI37632  Allophyllum integrifolium R. F. Thorne, M. Z. Thorne 1969-7-10 38395 Los Angeles San Gabriel Mountains, Angeles National Forest. 2027 Comment
  RSA370860  Alnus rhombifolia R. F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61231 San Diego De Luz Canyon: Along De Luz Creek and near small reservoir, not far from junction of Cottonwood Canyon and De Luz - Murrieta roads. 140 Comment
  SEINET3917839  Alopecurus howellii Robert F. Thorne 1973-5-23 43848 Riverside Santa ROSA PLATEAU: N side of Mesa de Colorado.; 0 610 Comment
  CAS-BOT-BC137954  Alopecurus saccatus Robert F. Thorne; E. Lathrop; O. Clark; S. Carlquist 1968-4-18 37442 Riverside Santa Rosa Plateau. Mesa de Colorado. 670 Comment
  RSA234060  Alopecurus saccatus R. F. Thorne, Earl Lathrop 1969-5-12 37944 Riverside Santa Rosa Plateau: Mesa de Colorado, Rancho California. 625 Comment
  SBBG31155  Amaranthus albus R. F. Thorne 1966-6-2 Los Angeles Echo Lake, NNE of Black Jack Mtn 411 Comment
  SD245232  Amaranthus albus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49593 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Margins of San Juan Creek. Comment
  RSA250545  Amaranthus blitoides R. F. Thorne, John Dourley 1967-10-10 37323 San Bernardino San Bernandino National Forest; At Lost Lake, in San Andreas Fault. 838 Comment
  UCR43588  Amaranthus blitoides R. F. Thorne, Et al 1985-7-18 61264 San Diego De Luz Canyon: along De Luz-Murrieta Road & De Luz Creek 140 Comment
  RSA191078  Amaranthus californicus R. F. Thorne, M. Z. Thorne 1967-7-2 37233 San Bernardino Angeles National Forest: above Baldy Village, San Antonio Canyon 1357 Comment
  RSA188159  Amblyopappus pusillus R. F. Thorne 1966-4-4 35766 Los Angeles Santa Catalina Island: near Ballast Point on E side of Catalina Harbor, Isthmus. Comment
  RSA303764  Amblyopappus pusillus R. F. Thorne, C. W. Tilforth 1979-4-3 52393 Ventura San Nicolas Island. Sand spit and Salina at extreme E. end of island. 6 Comment
  RSA306676  Amblyopappus pusillus R. F. Thorne, C. W. Tilforth, Bob Given 1979-5-1 52726 Santa Barbara San Miguel Island. Near airstrip on west side of the island. 122 Comment
  UCR36041  Amblyopappus pusillus R. F. Thorne, C. W. Tilforth, et al 1979-5-1 52752 Santa Barbara Channel Islands, San Miguel Island: bluff west of Simonton Cove 76 Comment
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Mar 8 2014
  CATA2605  Amblyopappus pusillus Robert F. Thorne, C. W. Tilforth, et al. 1979-4-4 52439 Ventura San Nicolas Island: Rocky reefs and san dunes at Seal Beach, N of cave, W end of island 2 Comment
  RSA170969  Ambrosia chamissonis R. F. Thorne, Percy C. Everett 1964-10-18 34147 Mendocino W of Hwy 1, ca. 7 miles N of Fort Bragg, W of the Grange Hall. Comment
  RSA314630  Ambrosia dumosa R. F. Thorne, F. R. Fosberg, M. H. Sachet, Charles C. Herbst 1983-4-23 55425 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  UCR222282  Ambrosia dumosa R. F. Thorne, W. Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55611 Inyo Mojave Desert; North Mojave Desert region, Death Valley National Monument, Funeral Mountains, campsite at lower end of Red Ampitheater above Hole in the Wall 768 Comment
  RSA251976  Ambrosia eriocentra R. F. Thorne, C. W. Tilforth 1973-5-31 43744 San Bernardino E Mojave Desert, N. slope New York Mountains: c. 0.5 mile N of Vanderbilt. 1220 Comment
  RSA279260  Ambrosia eriocentra R. F. Thorne, J. Henrickson 1975-5-3 45385 San Bernardino West slope of Providence Mountains, ca. 5 miles SSE of Kelso on Vulcan Mine Road. 793 Comment
  RSA175164  Amelanchier utahensis Robert F. Thorne 1963-5-27 31858 San Bernardino N side of Big Bear Lake, San Bernardino National Forest. 2073 Comment
  RSA191467  Amelanchier utahensis Robert F. Thorne, Lindsay Smith 1966-5-28 36382 San Bernardino San Gabriel Mountains, San Bernardino National Forest: about 1 mile E of Wrightwood, upper end Lone Pine Canyon 1829 Comment
  RSA229721  Amelanchier utahensis Robert F. Thorne, C. W. Tilforth 1969-6-26 38191 San Bernardino Divide between Lone Pine and Swarthout Valleys 1852 Comment
  RSA250643  Amorpha californica var. californica R. F. Thorne 1971-4-2 41415 Los Angeles Johnson's Pasture's, N. of Mountain Avenue, Claremont. 549 Comment
Read comments
Sep 17 2008
  SEINET2032785 Image available Amphipappus fremontii K. Thorne, B. Ratcliff 1983-4-3 2239 Inyo Death Valley, Emigrant Ranger Station. 610 Comment
  RSA0089993  Amsinckia R. F. Thorne, C. W. Tilforth 1976-4-15 47588 a Santa Barbara Santa Cruz Island. Christy Ranch. 5 Comment
  RSA187836  Amsinckia intermedia R. F. Thorne 1966-4-6 35885 Los Angeles Santa Catalina Island. Above Moonstone Cove. 15 Comment
  RSA639026  Amsinckia intermedia R. F. Thorne 1963-5-16 31762 Kern 5 miles E of Alta Sierra. 1524 Comment
  SD69479  Amsinckia intermedia Robert F. Thorne 1966-4-6 35885 Los Angeles Santa Catalina Island,above Moonstone Cove 14 Comment
  RSA303710  Amsinckia spectabilis R. F. Thorne, C. W. Tilforth 1979-4-4 52441 Ventura San Nicolas Island. Seal Beach, N of caves, W end of island 1 Comment
  RSA340139  Amsonia brevifolia var. tomentosa R. F. Thorne, Walter Wisura, et al. 1979-8-24 53670 San Bernardino San Bernardino Mtns. Holcomb Valley: Joshua Tree-pinyon-juniper woodland near junction of Johnston Grade and Rose Mine Road above Cactus Flat 1837 Comment
  RSA363980  Anagallis arvensis Robert F. Thorne, C. W. Tilforth 1976-4-15 47571 Santa Barbara Santa Cruz Island: Christy Ranch, top of small ridge S of creek, near ranch buildings. 8 Comment
  RSA246842  Anaphalis margaritacea R. F. Thorne 1965-9-20 35539 Del Norte Pelican Beach State Park. 5 Comment
  RSA342553  Andropogon glomeratus R. F. Thorne, C. W. Tilforth, L. M. Shultz, R. K. Benjamin, J. Hogge 1980-4-16 54093 Riverside San Bernardino Mountains: Flood plain (wash) along Whitewater River, ca. 3.0 miles N of Whitewater Post Office. 591 Comment
  RSA339266  Anemone tuberosa Robert F. Thorne, Barry A. Prigge 1978-5-9 51332 San Bernardino New York Mountains: NNW side of range, ESE from Brant (UPRR siding), up main wash to base of mountains. 1280 Comment
  OBI45075  Anemopsis californica Robert F. Thorne, C. W. Tilforth 1971-5-24 39614 Fresno Kings River; ca. 6 mi below Pine Flat Rd jctn, near headgate of Fresno Irrigation system along Kings River 122 Comment
  SBBG31329  Anemopsis californica R. F. Thorne 1966-4-6 35905 Los Angeles reservoir N of Catalina Airport 441 Comment
  SEINET8562180  Anemopsis californica Robert F. Thorne, E. Lathrop 1969-6-6 39340 Riverside Santa Rosa Plateau: Rancho California. 610 Comment
  SEINET8562025  Anemopsis californica Robert F. Thorne, C. W. Tilforth 1971-5-24 39614 Fresno Ca. 6 miles below Pine Flat Road junction, near headgate of Fresno Irrigation System along Kings River. 122 Comment
  CHSC23309  Angelica hendersonii Robert F. Thorne; P. Everett 1965-8-1 35077 San Mateo 21.5 mi. S of Golden Gate Bridge; on W-facing sea bluff. 68 Comment
  RSA246844  Angelica hendersonii R. F. Thorne, P. Everett 1965-8-1 35077 San Mateo 21.5 miles S of Golden Gate Bridge. 69 Comment
  SD82917  Angelica tomentosa Robert F. Thorne, CW Tilforth, J. Dourley & J. Benny 1971-7-7 40873 San Bernardino San Gabriel Mountains, San Bernardino National Forest; Grapevine Spring 1310 Comment
  RSA333600  Anisocoma acaulis R. F. Thorne, Barry A. Prigge, C. W. Tilforth 1980-6-2 54305 San Bernardino Near Mojave River, S of Hesperia and 5.2 miles N of junction of Silverwood Lake and Hesperia roads. 976 Comment
  RSA336304  Anthriscus caucalis R. F. Thorne, Avi Shmida, Walter Wisura 1978-5-4 51905 San Bernardino San Bernardino Nat'l Forest: Burned-over chaparral near City Creek along City Creek Road. 730 Comment
  RSA760765  Antirrhinum Robert F. Thorne, C. W. Tilforth 1974-5-30 44621 Inyo Panamint Mountains near Aguereberry Point 1890 Comment
  CHSC106531  Antirrhinum filipes R. F. Thorne; W. Wisura, B. Busenburg, R. K. Benjamin 1983-5-6 55607 Inyo Mojave Desert; Northcentral Mojave Desert Region: Death Valley Nat'l Monument, Funeral Mtns, upper end of Red amphitheatre. 976 Comment
  UC1536018  Antirrhinum nuttallianum subsp. nuttallianum Robert F. Thorne and Earl Lathrop 1975-5-25 45547 Riverside Rancho California Santa Rosa Plateau, Mesa de Burro (Mesa de Burro) 609 Comment
  RSA188317  Antirrhinum nuttallianum subsp. subsessile Robert F. Thorne 1965-6-23 34992 Los Angeles Santa Catalina Island. Near mouth of Hamilton Canyon NW of Avalon. 23 Comment
  RSA284071  Antirrhinum nuttallianum subsp. subsessile Robert F. Thorne 1977-4-28 48888 Santa Barbara Santa Rosa Island. Windmill canyon behind ranch buildings, W of Beechers Bay. 15 Comment
  CATA2426  Antirrhinum nuttallianum subsp. subsessile Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-28 48888 Santa Barbara Santa Rosa Island: Windmill Canyon behind ranch buildings, W of Beechers Bay 15 Comment
  CAS-BOT-BC361281  Anulocaulis annulatus Robert F. Thorne; P. Everett 1964-4-18 33845 Inyo Some milres south of Bad Water, Death Valley National Monument Comment
  SD69360  Aphanisma blitoides Robert F. Thorne, P. Everett 1965-5-11 34528 Los Angeles Santa Catalina Island, east side of Catalina Harbor, near Ballast Point 49 Comment
  SD90556  Aphanisma blitoides Robert F. Thorne 1973-4-12 42950 Los Angeles San Clemente Island, Pyramid Cove at south end of island Comment
  RSA0057935  Apiastrum angustifolium Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49666 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  RSA191344  Apocynum cannabinum R. F. Thorne, M. Z. Thorne 1967-7-19 37127 Los Angeles San Gabriel Mountains, Angeles National Forest: Yucca Flats Summer Home Tract at upper end of Canyon of N Fork of San Gabriel River 1250 Comment
  RSA230183  Apocynum cannabinum R. F. Thorne 1969-7-2 38246 a Los Angeles San Gabriel Mts., Angeles National Forest: East Fork of Alder Creek, Charlton Flat burn (of 1954) 1584 Comment
  RSA226642  Aquilegia formosa var. truncata Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-3 41159 Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, along Cold Water Creek. 2744 Comment
  RSA0125491  Arabis R. F. Thorne, Walter Wisura 1977-9-17 50772 Riverside San Jacinto Mountain: Long Valley to Round Valley along trail to summit. 2591 Comment
  RSA314724  Arabis holboellii var. retrofracta R. F. Thorne, Tim Krantz, Phil Pack, Mae Thorne 1982-9-10 55331 San Bernardino San Bernardino National Forest: South Fork Meadows of the Santa Ana River & adjacent forest, San Gorgonio Wilderness area, from Poop-Out Hill parking lot along Flume Trail through meadows, and back along Pack Trail 2378 Comment
  RSA334946  Arabis perennans R. F. Thorne, Prigge, Michener, Meyer, Walter Wisura 1978-5-25 51711 San Bernardino Providence Mountains: Middle Gilroy Canyon. 1372 Comment
  RSA281172  Arabis platysperma R. F. Thorne, Walter Wisura, T. P. Krantz, Lois Goodman 1977-7-19 49840 San Bernardino San Bernardino Mts, San Gorgonio Wilderness, along Fish Creek Trail E of Grinnell Mt, in open pine forest with much mountain chaparral. 2835 Comment
  RSA642800  Arabis repanda R. F. Thorne, Walter Wisura, D. C. Michener, Jim Shevock 1979-9-5 53830 Tulare Moses Mountain. 2287 Comment
  RSA191531  Arabis repanda var. repanda R. F. Thorne 1966-6-20 36550 San Bernardino San Gabriel Mts., San bernardino National Forest: rocky E-facing slope above Middle Fork canyon of Lytle Creek along Cucamonga Peak Trail, Cucamonga Peak wild area 2286 Comment
  RSA773229  Arabis sparsiflora var. californica R. F. Thorne 1968-4-4 37478 San Bernardino Ca. 5 miles WNW of Apple White Campground, near N fork of Lytle Creek Comment
  GH395237  Arbutus menziesii R. F. Thorne, E. W. Lathrop & G. Marshs 1977-5-4 49826 Unknown Santa Ana Mountains: Trabuco Canyon Comment
  RSA279808  Arctomecon merriamii Robert F. Thorne, C. W. Tilforth 1974-5-30 44639 Inyo Death Valley National Monument: Titus Canyon, desert wash, 1.8 mi. below Leadfield. 1037 Comment
  RSA246928  Arctostaphylos canescens subsp. canescens R. F. Thorne, P. C. Everett, K. Thorne 1965-8-3 25087 Mendocino Wilderness Lodge, Nature Conservancy. 457 Comment
  CAS-BOT-BC23866  Arctostaphylos catalinae Robert F. Thorne; P. Everett 1965-5-12 34599 Los Angeles Catalina Island, slopes of Bulrush Canyon. 274 Comment
  UCD50482  Arctostaphylos catalinae Robert F. Thorne; P. Everett 1965-5-12 34599 Los Angeles Bulrush Canyon, Santa Catalina Island. 274 Comment
  RSA169992  Arctostaphylos columbiana R. F. Thorne, Percy C. Everett, K. Thorne 1964-10-21 34243 Mendocino Headland W of Haven's neck, W of Hwy 1. 30 Comment
  CATA2131  Arctostaphylos confertiflora Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-28 48851 Santa Barbara Santa Rosa Island: E end, Torrey Pine grove S of Beechers Bay and W of Southeast Anchorage 76 Comment
  UCR58368  Arctostaphylos confertiflora R. F. Thorne, G. D. Wallace, M. Haefs 1977-4-28 48851 Santa Barbara Channel Islands, Santa Rosa Island, E end, Torrey pine grove south of Beechers Bay and west of Southeast Anchorage 122 Comment
  CAS-BOT-BC23366  Arctostaphylos glandulosa subsp. cushingiana Robert F. Thorne; P. Everett 1964-10-19 34178 Mendocino Near intersection of Mendocino Airport and Albion Rds. Comment
  SD255138  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne, E. W. Lathrop 1977-5-18 49727 Riverside Santa Ana Mountains: Bear Spring (east slope of Santiago Peak). Comment
  RSA167732  Arctostaphylos glandulosa subsp. zacaensis R. F. Thorne, John Olmsted 1963-7-26 32838 Orange In Tin Mine Canyon above Beek's Spring, Trabuco District, Santa Ana Mts., Cleveland National Forest. 854 Comment
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Apr 25 2011
  UC1532855  Arctostaphylos insularis Robert F. Thorne, C. W. Tilforth, et al. 1976-4-13 47461 Santa Barbara ca 1/2 mi wsw laboratory (s-facing slope of low ridge); Santa Cruz Island, Central Valley 213 Comment
  UC1408967  Arctostaphylos nevadensis Robert F. Thorne 1965-9-20 35482 Del Norte along Old Gasquet Toll Road ca 5 mi ene Gasquet (on rocky bank above small stream) 609 Comment
  GH350808  Arctostaphylos nummularia R. F. Thorne & P. Everett 1964-10-21 34221 Unknown On Gualala Ridge ca. 1.3 miles up Gualala Ridge Road from Hwy 1, SW Mendocino County Comment
  RSA146601  Arctostaphylos patula R. F. Thorne, Larry E. DeBuhr, C. W. Tilforth, K. Thorne 1972-9-21 42393 Shasta Castle Crags State Park. 701 Comment
  RSA250444  Arctostaphylos patula R. F. Thorne 1967-3-23 41606 Los Angeles Islip saddle along Angeles Crest Hwy 2012 Comment
  UCD53450  Arctostaphylos patula subsp. platyphylla Robert F. Thorne; John Olmsted 1965-8-26 35352 Los Angeles San Gabriel Mountains; Angeles National Forest; near top of Bue Ridge, SE of Holiday Hill Ski Lift. 2560 Comment
  UCR48541  Arctostaphylos patula subsp. platyphylla R. F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47749 San Bernardino San Bernardino Mtns., San Bernardino National Forest, c. 2 mi along Mill Creek Road and [Forest Service Road] 2N10 from Coldbrook Campground 2226 Comment
  RSA249851  Arctostaphylos pringlei subsp. drupacea R. F. Thorne, J. P. Simon, C. W. Tilforth 1969-6-24 38123 Riverside San Bernardino National Forest, San Jacinto Mountains.: Above and in James Reserve. 1677 Comment
  RSA249516  Arctostaphylos pumila R. F. Thorne, Percy C. Everett 1965-8-1 35062 Monterey Del Monte Research Park by Monterey Airport. 60 Comment
  RSA175119  Arctostaphylos pungens R. F. Thorne, Percy C. Everett 1963-9-26 33228 San Diego Ca. 1 mi W of intersection of Hwy 79 and 80; ca. 1 mi from Descanso. 1067 Comment
  UC1349319  Arctostaphylos tomentosa subsp. subcordata Robert F. Thorne and P. Everett 1967-4-17 36783 Santa Barbara Eastern Ridge Rd at head of canyon Santa Cruz Island, Albert Canyon 274 Comment
  UC1409056  Arctostaphylos tomentosa subsp. tomentosa Robert F. Thorne and P. Everett 1965-8-1 35068 Monterey by Monterey Airport; Del Monte Research Park 60 Comment
  CAS-BOT-BC43993  Arctostaphylos uva-ursi Robert F. Thorne; P. Everett 1965-8-5 35156 Humboldt Samoa Dunes 3 Comment
  RSA169989  Arctostaphylos uva-ursi var. coactilis R. F. Thorne, Percy C. Everett, K. Thorne 1964-10-21 34240 Mendocino Headland W of Haven's neck, W of Hwy 1. 30 Comment
  RSA355873  Arctostaphylos viridissima R. F. Thorne 1968-6-6 37744 Santa Barbara Santa Ynez Mts: Bald Mt., W of Refugio Pass. Comment
  RSA355876  Arctostaphylos viridissima R. F. Thorne 1968-6-6 37751 Santa Barbara Santa Ynez Mts: Refugio Pass. Comment
  CAS-BOT-BC48248  Arctostaphylos viscida subsp. viscida Robert F. Thorne; Walter Wisura; Dave Michener; Jim Shevock 1979-9-4 53700 Tulare Near Bear Creek: on County Road 220, (Bear Creek Road), NE of Porterville toward Balch Park. 975 Comment
  RSA167609  Arctostaphylos viscida subsp. viscida R. F. Thorne, Percy C. Everett, K. Thorne 1964-4-16 33739 Amador 3.2 miles S of Ione. 91 Comment
  RSA334310  Arenaria lanuginosa subsp. saxosa R. F. Thorne, C. W. Tilforth 1980-8-12 54705 San Bernardino San Bernardino National Forest: South Fork Meadows of the Santa Ana River and adjacent forest. San Gorgonio Wilderness area. 2377 Comment
  RSA336324  Argemone munita subsp. rotundata Robert F. Thorne, Christopher Davidson 1978-6-18 52203 San Bernardino Cushenbury Canyon: Along Chicopee Creek below Whiskey Springs. 1616 Comment
  RSA584697  Argyrochosma jonesii R. F. Thorne, Barry Prigge, David Michener 1978-5-26 51719 San Bernardino Providence Mountains: E slope; Gilroy Canyon. 1250 Comment
  RSA286996  Armeria maritima subsp. californica Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-29 48999 Santa Barbara Santa Rosa Island. North slope of Black Mountain. 213 Comment
  RSA334289  Artemisia biennis R. F. Thorne, T. P. Krantz, L. M. Shultz 1980-10-3 54866 San Bernardino San Bernardino National Forest, along lower Holcomb Creek where crossed by the road N from Fawnskin, N of Delamar Mountain, W of Hitchcock Ranch. 2195 Comment
  RSA545214  Artemisia californica R. F. Thorne 1970-10 41875 Riverside San Bernardino Mountains- Whitewater canyon: ca. 1350 ft. near bridge and Whitewater Post Office to ca. 2000 ft. up the canyon toward fish hatchery. 610 Comment
  CATA2620  Artemisia californica Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52640 Santa Barbara San Miguel Island: On ravine slopes above and west of Ranger Station in north-trending canyon 121 Comment
  RSA188485  Artemisia douglasiana R. F. Thorne, John Olmsted 1965-8-26 35398 Los Angeles Angeles National Forest, thickety area near Prairie Fork 1616 Comment
  RSA191633  Artemisia dracunculus R. F. Thorne, M. Z. Thorne 1966-8-29 36592 Los Angeles San Gabriel Mts; Angeles National Forest: sunny, small, dry depression south of Crystal Lake 1722 Comment
  RSA228866  Artemisia dracunculus R. F. Thorne 1971-6-26 40636 Los Angeles San Gabriel Mountains, Angeles National Forest: Big Tujunga Canyon 427 Comment
  RSA790665  Artemisia ludoviciana subsp. albula R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48651 San Bernardino Granite Mountains, eastern Mojave Desert: on hike from Cottonwood Springs to Granite Peak 1463 Comment
  CAS-BOT-BC90810  Artemisia nesiotica Robert F. Thorne 1968-4-27 37508 Los Angeles Santa Barbara Island: plateau near headwaters of Middle Canyon 76 Comment
  RSA278729  Artemisia tridentata R. F. Thorne, Walter Wisura 1978-5-26 51571 San Bernardino Upper Bull Canyon. Granite Mts. 1707 Comment
  RSA334383  Artemisia tridentata R. F. Thorne, R. D. Stone, S. Castagnoli, Greg de Nevers 1980-9-21 54817 San Bernardino Kingston Mountains: Horsethief Springs Canyon and sagebrush flat 1585 Comment
  RSA287050  Arthrocnemum subterminale R. F. Thorne, Gary D. Wallace, M. Haefs 1977-4-28 s.n. Santa Barbara Santa Rosa Island: E end, S of Beechers Bay, W of Southeast Anchorage Comment
  RSA341271  Asarum hartwegii R. F. Thorne 1979-9-4 53707 Tulare Near Bear Creek: Along County Road 220 1220 Comment
  RSA252128  Asclepias asperula R. F. Thorne, Tilforth 1973-6-21 44147 San Bernardino New York Mountains: Narrow canyon above Sagamore Mine. 1738 Comment
  RSA307126  Asclepias californica R. F. Thorne, B. A. Prigge 1979-5-10 52853 San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  CAS-BOT-BC15653  Asclepias cordifolia Robert Folger Thorne; C. W. Tilforth 1969-9-5 39152 Modoc Near Pine Creek Falls. 1752 Comment
  SEINET10580365  Asclepias cordifolia Robert F. Thorne, C. W. Tilforth 1969-9-5 Thorne 39152 Modoc Modoc National Forest, Warner Mts., near Mill Creek Falls 1753 Comment
  UC1349057  Asclepias fascicularis Robert F. Thorne 1966-9-15 36678 Los Angeles above Parson's Landing; Santa Catalina Island 76 Comment
  RSA291877  Asclepias fascicularis R. F. Thorne, M. Z. Thorne 1969-7-19 38594 Inyo Little Lake 1067 Comment
  RSA191475  Asclepias vestita R. F. Thorne, Lyndsay Smith 1966-5-28 s.n. San Bernardino Mojave Desert: just N of the San Gabriel Mountians, along Hwy 138, ca 2 miles WNW of Phelan near Los Angeles County line. 1220 Comment
  RSA307334  Asclepias vestita R. F. Thorne 1979-5-10 52884 San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  RSA188235  Aspidotis californica R. F. Thorne, Percy C. Everett 1965-6-22 34848 Los Angeles Santa Catalina Island: Renton Mine area 243 Comment
  RSA754260  Astragalus Robert F. Thorne 1963-5-27 31956 San Bernardino N side of Big Bear Lake 2073 Comment
  RSA759632  Astragalus Robert F. Thorne 1963-5-27 31857 San Bernardino N side of Big Bear Lake 2073 Comment
  RSA792049  Astragalus Robert F. Thorne, James Henrickson 1975-5-3 45438 San Bernardino E End Granite Mts.: Snake Spring. 1220 Comment
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Feb 22 2013
  RSA233488  Astragalus douglasii var. douglasii R. F. Thorne 1972-6-29 42074 Los Angeles San Bernardino National Forest, Lone Pine Canyon. 1098 Comment
  RSA754189  Astragalus gambelianus Robert F. Thorne, Percy C. Everett 1964-4-16 33743 El Dorado 2 miles S of center of Placerville. 640 Comment
  RSA800188  Astragalus insularis var. harwoodii Robert F. Thorne, R. Rutherford 1964-4-10 33564 Imperial East side Sand Hills, 14 miles west of Yuma on Hwy 80. Comment
  RSA758912  Astragalus layneae Robert F. Thorne, Walter Wisura, B. Busenberg, R. K. Benjamin 1983-5-9 55699 Inyo Death Valley Nat'l Monument, Funeral Mountains, Keane Wonder Springs. 1189 Comment
  RSA250371  Astragalus lentiginosus var. antonius R. F. Thorne, M. Z. Thorne 1963-7-10 38400 Los Angeles San Gabriel Mountains, Angeles National Forest: 1.5 miles W of Wrightwood. 1951 Comment
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Dec 7 2015
  RSA759634  Astragalus lentiginosus var. variabilis Robert F. Thorne 1963-5-17 31802 Kern Summit of Walker Pass. 1616 Comment
  RSA287836  Astragalus miguelensis R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-30 49027 Santa Barbara Santa Rosa Island. 1 km N of ranch, dunes W of Northwest Anchorage at NE end of island. 30 Comment
  RSA305608  Astragalus miguelensis R. F. Thorne, John Dourley, Walter Wisura 1979-4-24 52534 Santa Barbara Santa Cruz Island. East of Fraser Point, on the northwest side of the island. 8 Comment
  RSA306671  Astragalus miguelensis R. F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52700 Santa Barbara San Miguel Island. Found on uplands of the island. 152 Comment
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Mar 17 2015
  RSA0057934  Astragalus mohavensis Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48671 San Bernardino Granite Mountains, eastern Mojave Desert: Summit ridge just north of Granite Peak, peak at north end of ridge. 2061 Comment
  RSA339265  Astragalus nuttallianus var. imperfectus R. F. Thorne, B. A. Prigge 1978-5-9 51331 San Bernardino New York Mountains: NNW side of range, ESE from Brant (UPRR siding), up main wash to base of mountains 1280 Comment
  RSA340123  Astragalus tidestromii R. F. Thorne 1978-5-11 51412 San Bernardino N. Clark Mountains: Shire Gypsum Deposit, E. Mojave Desert 1052 Comment
  RSA296332  Astragalus traskiae R. F. Thorne, C. W. Tilforth, et al. 1979-4-3 525358 Ventura San Nicolas Island. Bluffs, dunes and beaches (mostly from roadway to beach) on E end of island NE end of airport terminal. 12 Comment
  CAS-BOT-BC194075  Astragalus trichopodus var. lonchus Robert F. Thorne; C. W. Tilforth 1971-6-17 39970 Los Angeles 2 mi. up Lower Tujunga Rd. from Forestry Headquarters, Little Tujunga Creek, San Gabriel Mts., Angeles National Forest 457 Comment
  UC1483379  Astrolepis cochisensis Robert F. Thorne, W. Wisura, and C. Davidson 1977-5-27 49118 San Bernardino above Pachalka Spring; E. Mojave Desert, Clark Mt Range 1554 Comment
  RSA239865  Atrichoseris platyphylla R. F. Thorne, C. W. Tilforth 1973-3-8 42502 Inyo Death Valley National Monument: c. 1/4 mi N of Beatty Jct. -46 Comment
  SD90587  Atriplex argentea var. expansa Robert F. Thorne 1973-4-12 42890 Los Angeles San Clemente Island; plateau near Cutlass above old dam. 199 Comment
  RSA177735  Atriplex californica R. F. Thorne, P. Everett 1965-5-11 34572 Los Angeles Santa Catalina Island, N beach of Little Harbor. Comment
  RSA35997  Atriplex californica R. F. Thorne 1966-4-15 35997 Los Angeles San Clemente Island: 2/3 mile SSE of Eel Point (and N of Seal Cove). 76 Comment
  RSA334725  Atriplex canescens subsp. canescens R. F. Thorne, B. A. Prigge, D. C. Michener, S. Meyer, Walter Wisura 1978-5-25 51665 San Bernardino Providence Mountains: Along rocky road to Bonanza King Mine 1280 Comment
  RSA760172  Atriplex confertifolia K. Thorne, Walter Wisura, R. K. Benjamin, B. Busenburg 1983-5-9 55664 Inyo Death Valley Nat l Monument, Funeral Mountains NE of Hells Gate, jct of Beatty Rd and gravel rd to Chloride Cliff. 1037 Comment
  RSA336133  Atriplex lentiformis R. F. Thorne 1978-4-29 52108 Imperial South of Salton Sea: West Lake along Alamo River, S of Calipatria Comment
  CATA2671  Atriplex leucophylla Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-29 48972 Santa Barbara Santa Rosa Island: Near China Camp W of arroyo mouth 6 Comment
  RSA248833  Atriplex leucophylla R. F. Thorne 1973-4-12 42917 Los Angeles San Clemente Island, Horse Cove, S end of island. 3 Comment
  RSA332410  Atriplex prostrata R. F. Thorne 1984-5-6 58447 Santa Barbara Santa Cruz Island. Prisoner s Harbor Camp Comment
  RSA338385  Atriplex rosea R. F. Thorne, Kay Wright, R. K. Benjamin, J. Herrick 1982-9-3 55299 San Bernardino San Bernardino Mountains: near Pan Hot Springs, west end of Baldwin Lake 2049 Comment
  RSA338386  Atriplex truncata R. F. Thorne, Kay Wright, R. K. Benjamin, J. Herrick 1982-9-3 55298 San Bernardino San Bernardino Mountains: near Pan Hot Springs, west end of Baldwin Lake. Comment
  UC1536056  Azolla filiculoides Robert F. Thorne and C. W. Tilforth 1971-5-24 39622 Madera ca. 3 mi se of Coarse Gold; Coarse Gold Highlands DVP 609 Comment
  SD69578  Baccharis glutinosa Robert F. Thorne 1966-9-14 36657 Los Angeles Santa Catalina Island, shallow water of small stream in lower Middle Ranch Canyon near junction of Isthmus road and road to Ben Weston Beach 60 Comment
  RSA176334  Baccharis pilularis R. F. Thorne 1957-9-3 1902 B Humboldt Patrick's Point State Park. Comment
  RSA177881  Baccharis salicifolia R. F. Thorne, Percy C. Everett 1965-5-11 34657 Los Angeles Santa Catalina Island. Small pond behind Cottonwood Dam in Cottonwood Canyon. 46 Comment
  RSA178082  Baccharis salicifolia R. F. Thorne, J. Henrickson 1963-5-5 32312 Los Angeles Upper part of Cobal Canyon, foothills of San Gabriel Mts., ca. 4 miles N of Claremont. 518 Comment
  SD107858  Baccharis salicifolia Robert F. Thorne, D. Propst & M Hoefs 1974-9-12 45104 Los Angeles Along stream running into reservoir in Cottonwood Canyon below Rancho Escondido. 105 Comment
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Jan 30 2015
  UC1483353  Baccharis salicifolia subsp. salicifolia Robert F. Thorne and D. Propst 1974-9-12 45097 Los Angeles Thompson Reservoir Santa Catalina Island 213 Comment
  RSA278849  Baccharis sergiloides R. F. Thorne, C. W. Tilforth 1974-5-10 444431 San Bernardino New York Mountains. Keystone Canyon, c. 1/4 mi below (N of ) Keystone Spring. 1707 Comment
  RSA284175  Baccharis sergiloides R. F. Thorne, C. W. Tilforth 1977-10-28 50615 San Bernardino E Mojave Desert, Granite Mts, about Budweiser Spring on SE side of Mts. 1174 Comment
  RSA342551  Baccharis sergiloides R. F. Thorne 1980-4-16 54094 Riverside San Bernardino Mountains: Flood plain (wash) along Whitewater River, ca. 3.0 miles N of Whitewater Post Office. 591 Comment
  UCR196010  Balsamorhiza deltoidea R. F. Thorne, C. W. Tilforth 1971-5-24 39639 Madera Sierra Nevada Mountains, c. 4 mi south of North Fork 640 Comment
  CAS-BOT-BC16439  Barbarea orthoceras R. F. Thorne; M. Z. Thorne 1969-7-9 38565 Los Angeles San Gabriel Mountains. Angeles National Forest. Upper part of meadow at Big Pines. 2087 Comment
  RSA0024647  Bebbia juncea R. F. Thorne, Carol Annable, R. K. Benjamin, Bonnie Busenberg, Mary DeDecker, Paul DeDecker, Wesley Niles, Paul Peterson 1983-5-9 55625 Inyo Death Valley Nat'l Monument, Funeral Mountains, campsite at lower end of Red Amphitheatre above Hole in the Wall, just E of park boundary 768 Comment
  UC1483324  Berula erecta Robert F. Thorne, L. DeBuhr, et al. 1972-10-13 42450 San Bernardino near Blue Cut due s Lost Lake (Cajon Canyon along Cajon Creek, San Gabriel Mts., San Bernardino National Forest); San Bernardino National Forest, San Gabriel Mts., Cajon Cree 807 Comment
  UCD97724  Beta vulgaris subsp. maritima Robert F. Thorne; P. Everett 1965-5-11 34538 Los Angeles Salt flats N, and rocky shore line along Catalina Harbor, Santa Catalina Island. Comment
  SEINET12028586  Betula occidentalis R. F. Thorne, Thorne, M. Z.; DeDecker, M. 1969-1 38829 Inyo Owens Valley, along small intermittent stream in wash below springs area N of Symmes Creek 1707 Comment
  RSA279111  Bituminaria bituminosa R. F. Thorne 1971-3-18 41500 Los Angeles Cobal Canyon, 3 miles N of Claremont 502 Comment
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Nov 8 2020
  RSA303661  Bloomeria crocea var. crocea Robert F. Thorne, C. W. Tilforth, et al. 53413 San Bernardino Grass Valley, about 1 mile west of Lake Arrowhead, north end of lake and below dam on stream. 1570 Comment
  RSA279045  Boechera californica R. F. Thorne 1971-4-23 41475 Los Angeles disturbed ground near Santa Anita Canyon Road. San Gabriel Mountains. 457 Comment
  SD181651  Boechera perennans Robert F. Thorne 1973-4-29 43343 San Bernardino New York Mountains: Caruthers Canyon, near Hard Cash Mine, 2.9 miles north of New York Mountains road. 1865 Comment
  SEINET3092312 Image available Boerhavia erecta var. intermedia Robert F. Thorne, Rolf and Gertrud Dahlgren 1979-8-23 53604 Riverside Pinto Basin Road: Along road, 4.5 miles S of meeting area of Mojave and Colorado Deserts. Comment
  RSA339328  Boerhavia intermedia Robert F. Thorne, Gertrud Dahlgren, R. Dahlgren 1979-8-22 53572 Riverside Joshua Tree National Monument: Just S of San Bernardino Co. line near jct of road to Split Rock and 29 Palms; Valley W of Pinto Mountains. 1098 Comment
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Apr 25 2011
  RSA339620  Boerhavia wrightii Robert F. Thorne, R. Dahlgren, Gertrud Dahlgren 1979-8-22 53572 Riverside Joshua Tree National Monument: Just S of San Bernardino Co. line near jct of road to Split Rock and 29 Palms; Valley W of Pinto Mountains. 1098 Comment
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Apr 25 2011
  RSA286269  Boisduvalia densiflora var. densiflora Robert F. Thorne 1974-7-27 44943 Lake Boggs Lake north of Harrington Flat Road. 915 Comment
  RSA0011460  Boisduvalia macrantha Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46980 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SEINET14380060  Bouteloua curtipendula R. F. Thorne, C. W. Tilforth, B. Prigge, et al. 1977-10-29 50715 San Bernardino E. Mohave Desert, Providence Mts.: Canyon above Bonanza King Mine. 1402 Comment
  RSA247868  Bouteloua gracilis R. F. Thorne, C. W. Tilforth 1973-6-21 44088 San Bernardino E. Mojave Desert, Mid Hills, Pinto Valley: 2 miles E of Bathtub Springs. 1677 Comment
  RSA371328  Bouteloua gracilis R. F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47653 San Bernardino San Bernardino Mountains: 1/4 mile E of Highway 18 across E end of Big Bear Lake. 2073 Comment
  RSA334405  Bouteloua trifida R. F. Thorne, Lelia Shultz 1980-9-19 54775 Inyo Kingston Mountains: (San Bernardino - Inyo Counties) Area above Crystal Springs and above and to the W on blue limestone mountains. 1280 Comment
  RSA356015  Bowlesia incana R. F. Thorne 1965-3-27 35679 Santa Barbara Campsite, 2 miles beyond Midland School. 426 Comment
  RSA755717  Brasenia schreberi R. F. Thorne, M. Patterson 1982-8-31 55239 Lake Northwest slope of Mount Hannah, Boggs Lake 854 Comment
  RSA275536  Brickellia arguta R. F. Thorne, C. W. Tilforth, A. Shmida 1978-5-9 51274 San Bernardino E. Mojave Desert; Granite Mountains: Coyote Springs (NE corner of range). 1006 Comment
  RSA284231  Brickellia arguta R. F. Thorne 1977-10-28 50636 San Bernardino Granite Mountains; Budweiser Canyon. 1220 Comment
  RSA342556  Brickellia arguta R. F. Thorne 1980-5-28 54208 Riverside Branch ravine running W from Whitewater Canyon, W of road and ca. 3.2 miles N of Hwy 10 and Whitewater P.O. 610 Comment
  RSA191629  Brickellia californica R. F. Thorne, M. Z. Thorne 1966-8-29 36598 Los Angeles along hwy from Crystal Lake to Islip Saddle. 1615 Comment
  SD247579  Brickellia incana R. F. Thorne, C. W. Tilforth, et al. 1976-10-30 48680 San Bernardino Granite Mountains, eastern Mojave Desert: Along Cottonwood Wash less than 1.0 air mile east of Coyhote Springs. 1067 Comment
  UCD169769  Brickellia incana R. F. Thorne; et al. 1976-10-30 48680 San Bernardino Granite Mountains, eastern Mojave Desert: Along Cottonwood Wash less than 1 air mile east of Coyote Springs. 1067 Comment
  RSA228865  Brickellia nevinii R. F. Thorne 1971-6-26 40633 Los Angeles San Gabriel Mountains, Angeles National Forest: Big Tujunga Canyon 427 Comment
  RSA290718  Brickellia oblongifolia var. linifolia R. F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-11 44795 Inyo Death Valley National Monument, Panamint Mts.: Wildrose Canyon c. 1 mi below beehive charcoal kilns. 1981 Comment
  UC1518735  Brickellia oblongifolia var. linifolia Robert F. Thorne, Walter Wisurea, John Dourley, and Tim Krantz 1982-6-18 55043 San Bernardino burned-over area (fire of 1979) along Cushenbury Grade, San Bernardino National Forest San Bernardino National Forest, Cushenbury Grade 1828 Comment
  UC1349289  Brodiaea elegans subsp. elegans Robert F. Thorne and P. Everett 1967-6-7 36914 Tulare Coffee Creek Camp Ground Sequoia National Forest, Middle Fork of Tule River Comment
  UC1409124  Brodiaea filifolia Robert F. Thorne and E. Lathrop 1969-6-6 39323 Riverside Santa Rosa Plateau: Rancho California, Mesa de Colorado 624 Comment
  RSA356724  Brodiaea terrestris subsp. kernensis Robert F. Thorne, Earl Lathrop 1975-5-25 45552 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro 609 Comment
  RSA278731  Bromus berteroanus R. F. Thorne, Walter Wisura, et al. 1978-5-26 51563 San Bernardino Granite Mountains: upper Cottonwood Basin. 1585 Comment
  SEINET10524570  Bromus berteroanus Robert F. Thorne 1986-2-21 Thorne 61600 Unknown San Martin Island; 3 miles off the cinder cones of San Quintin. 100 Comment
  HSC65801  Bromus diandrus R. F. Thorne 1971-4-23 41473 Los Angeles Angeles National Forest, NE of Chantry Flats along Santa Anita Creek 549 Comment
  RSA305593  Bromus diandrus R. F. Thorne, John Dourley, Walter Wisura, et al. 1979-4-25 52589 Santa Barbara Santa Cruz Island. Campus of the Biological Station west of the Stanton Ranch, Canada del medio 76 Comment
  RSA314626  Bromus diandrus R. F. Thorne, F. R. Fosberg, M. H. Sachet, Charles C. Herbst 1983-4-23 55424 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  RSA584815  Bromus hallii R. F. Thorne, Christopher Davidson, Walter Wisura, T. P. Krantz 1977-7-21 49955 San Bernardino San Bernardino Mountains: San Gorgonio Wilderness: along San Bernardino Peak Divide Trail W of Manzanita Spring. 2439 Comment
  RSA287786  Bromus hordeaceus R. F. Thorne, Gary D. Wallace, M. Hoefs 1977-4-28 48794 Santa Barbara Santa Rosa Island. Box Canyon. 76 Comment
  SD69811  Bromus madritensis subsp. rubens Robert F. Thorne 1968-4-28 37491 Santa Barbara Santa Barbara Island; grassy plateau between headwaters of Middle and Graveyeard Canyons 91 Comment
  UCR36092  Bromus maritimus R. F. Thorne, C. W. Tilforth, B. Given, et al. 1979-5-1 52766 Santa Barbara Channel Islands, San Miguel Island, high dune slope west of Simonton Cove 30 Comment
  RSA302299  Bromus rubens R. F. Thorne, C. W. Tilforth, et al. 52345 Ventura San Nicolas Island. Plateau immediately south of airport terminal and hangars, E end of island. 168 Comment
  RSA191771  Bromus suksdorfii R. F. Thorne, J. Henrickson 1963-8-10 33103 Mono 1.3 miles beyond Sardine Creek meadow, ca. 1 mile E of Sonora pass, Toiyabe National Forest 2805 Comment
  RSA279812  Buddleja utahensis R. F. Thorne, C. W. Tilforth 1974-5-28 44537 San Bernardino East Mojave Desert: 5.3 miles west of State Line (Nevada) along powerline road. 1005 Comment
  RSA641244  Buddleja utahensis R. F. Thorne, C. W. Tilforth 1974-5-28 44537 San Bernardino East Mojave Desert: 5.3 miles west of State Line (Nevada) along powerline road. 1005 Comment
  RSA759819  Buddleja utahensis R. F. Thorne, Walter Wisura, B. Busenburg, R. K. Benjamin 1983-5-6 55594 Inyo Death Valley Nat'l Monument, Funeral Mtns, upper end of Red Amphitheatre 1341 Comment
  RSA170960  Cakile maritima var. maritima R. F. Thorne, P. Everett 1964-10-19 34167 Mendocino Along Doyle Creek near its mouth at Caspar Bay 1 Comment
  RSA550890  Calamagrostis nutkaensis R. F. Thorne, P. Everett 1965-8-7 35191 Humboldt Big Lagoon, south end. 2 Comment
  RSA752799  Calandrinia ciliata R. F. Thorne 1980-4-25 54125 Los Angeles Santa Catalina Island. Along road from Blackjack Camp to Orizaba Peak. 579 Comment
  RSA199127  Calandrinia maritima R. F. Thorne 1968-4-28 37480 Santa Barbara Santa Barbara Island. S-facing slope of high bluff on E side of embayment of Cat Canyon 69 Comment
  RSA286797  Callitriche heterophylla subsp. bolanderi R. F. Thorne 1974-5-23 44660 Riverside Santa Rosa Plateau, Rancho California; near junction of Tenaja Road and road to ranch headquarters. 610 Comment
  SEINET10701283  Callitriche longipedunculata Robert F. Thorne 1973-4-12 Thorne 42732 Tulare Comment
  RSA176279  Callitriche verna R. F. Thorne, James Henrickson 1963-8-10 33150 Mono 1.3 miles beyond Sardine Creek Meadow, ca. 1 mile E of Sonora Pass, Toiyabe National Forest. 2835 Comment
  RSA177940  Calochortus amabilis Robert F. Thorne 1965-4-20 34360 Sonoma On Cavedale Road, 0.5 miles up from State Hwy 12, ca. 4 miles N of Sonoma. 244 Comment
  UCD139483  Calochortus amabilis Kirstine M. Thorne 1982-5-15 30 Marin 3.8 miles west intersection between Hwys 128 and 121 by mile marker 20. 289 Comment
  RSA250408  Calochortus invenustus Robert F. Thorne, H. J. Eichler 1968-7-27 37849 San Bernardino San Gabriel Mountains, Angeles National Forest: just E of Baldy summit 2851 Comment
  RSA249804  Calochortus kennedyi var. kennedyi Robert F. Thorne 1973-5-11 43458 Los Angeles Mojave Desert Slope: 1/4-1/2 mile N of Bobs Gap, N slope of Holcomb Ridge, ca. 2 1/2 miles due S of Llano. 1159 Comment
  RSA311207  Calochortus panamintensis Robert F. Thorne, Walter Wisura, M. Patterson, et al. 1983-7-4 56187 Inyo Panamint Mountains: Hike up Water (Thorndike) Canyon from mouth to upper end on the north slope of Rogers Peak, Death Valley National Monument. 2268 Comment
  RSA225937  Calochortus plummerae Robert F. Thorne, C. W. Tilforth, John Dourley, J. Benny 1971-7-7 40872 San Bernardino San Gabriel Mountains, San Bernardino National Forest: Grapevine Spring 1311 Comment
  RSA729799  Calochortus weedii Robert F. Thorne 1963-7-26 23839 Orange Tin Mine Canyon above Beeks Spring, Trabuco District, Cleveland National Forest 854 Comment
  RSA249589  Calycanthus occidentalis R. F. Thorne, Stan T. Blake 1965-6-4 34799 Fresno Sequoia National Forest. Above King s River along Hwy. 180. 1494 Comment
  RSA275771  Calycoseris parryi K. Thorne 1977-5-26 49175 San Bernardino Clark Mtn. Range: along trail to Fir Canyon near its mouth 1585 Comment
  RSA275865  Calycoseris parryi R. F. Thorne 1977-5-27 49097 San Bernardino E Mojave Desert, Clark Mountain Range; above Pachalka Spring; [map included with specimen] 1524 Comment
  RSA336356  Calycoseris parryi R. F. Thorne 1978-6-18 52189 San Bernardino Cushenbury Canyon: 0.1 mile within San Bernardino National Forest 1372 Comment
  SD90391  Calycoseris parryi Robert F. Thorne 1973-5-11 43478 Los Angeles San Gabriel Mountains; 1/4-1/2 miles north of Bob's Gap; north slope of Holcomb Ridge. 1160 Comment
  SD69032  Calystegia macrostegia subsp. cyclostegia Robert F. Thorne 1966-9-14 36630 Los Angeles Santa Catalina Island; weedy margin of reservoir, Middle Ranch, Middle Ranch Canyon. 199 Comment
  RSA640633  Calystegia macrostegia subsp. cyclostegia R. F. Thorne, P. C. Everett, K. Thorne 1963-4-20 31592 San Luis Obispo ca. 2 miles NW from Cuesta Pass along Cuesta Ridge. Comment
  CAS-BOT-BC215753  Calystegia macrostegia subsp. intermedia Robert F. Thorne; P. Everett 1965-6-22 34882 Los Angeles rocky slope along new road along East Mountain, S end of island, Santa Catalina Island 457 Comment
  RSA332398  Calystegia macrostegia subsp. macrostegia R. F. Thorne 1984-5-5 58390 Santa Barbara Santa Cruz Island. Prisoners Harbor on bluff just E of lagoon. 8 Comment
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Jun 12 2015
  RSA340527  Calystegia malacophylla R. F. Thorne, Walter Wisura, Dave Michener, Jim Shevock, K. Thorne 1979-9-4 53723 Tulare Moses Mountain: Campground at Mountain Home State Forest, where the Tule River crosses the road coming down Moses Mt. 1890 Comment
  RSA250491  Calystegia occidentalis subsp. fulcrata R. F. Thorne, John Dourley 1967-10-10 37345 Los Angeles Angeles National Forest: Blue Ridge. 2256 Comment
  UCR227769  Camissonia bistorta R. F. Thorne, C. W. Tilforth 1971-4-9 41542 Los Angeles Transverse Range; San Gabriel Mtns., Angeles National Forest; San Dimas Canyon, below entrance to wooded area of canyon near creek 381 Comment
  SEINET4681022  Camissonia boothii K. Thorne, B. Ratcliff 1983-4-5 2312 Inyo Death Valley, Greenwater Spring SW of Gold Valley.; 0 869 Comment
  RSA172206  Camissonia boothii subsp. condensata Robert F. Thorne 1963-5-23 31848 Imperial 4 miles NW of Ocotillo just outside limits of Anza-Borrego Desert State Park Comment
  RSA175081  Camissonia boothii subsp. condensata Robert F. Thorne 1963-3-29 32426 Riverside Colorado Desert, 12 miles ENE of Mecca. Comment
  RSA249793  Camissonia boothii subsp. decorticans Robert F. Thorne 1973-5-11 43489 Los Angeles 1/4-1/2 mile N of Bob's Gap, N slope of Holcomb ridge, ca. 2.5 miles due S of Llano. 1159 Comment
  RSA337403  Camissonia campestris subsp. campestris Robert F. Thorne, C. W. Tilforth, Barry A. Prigge, C. Davidson 1979-5-22 52980 San Bernardino S of Santa Fe RR near Grapevine Canyon Road about 3 air miles SSE of Fifteenmile Pt. near junction of Oriole and Flicker streets; [San Bern. Mts.] 1098 Comment
  RSA314547  Camissonia chamaenerioides Robert F. Thorne, Walter Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55575 Inyo Funeral Mountains: at mouth of Mortonia Canyon, upper end of Red Amphitheatre, up canyon perhaps 1.5 mi. 1073 Comment
  RSA172298  Camissonia claviformis subsp. aurantiaca Robert F. Thorne 1963-3-29 32363 Riverside 5 miles E of Mecca, Mecca Hills. 152 Comment
  RSA175083  Camissonia claviformis subsp. claviformis Robert F. Thorne 1963-4-12 32496 San Bernardino Sandy desert about 7 miles ESE of Old Woman Springs, SW edge Mojave Desert. 1067 Comment
  RSA356617  Camissonia claviformis subsp. claviformis Robert F. Thorne 1966-3-26 35737 San Diego Borrego Valley: ca. 2-3.5 miles NE of Borrego Springs. 183 Comment
  RSA339672  Camissonia confusa Robert F. Thorne, C. W. Tilforth 1980-5-28 54221 Riverside San Bernardino Mts: Rocky and sandy wash along Whitewater River, ca. 3.2 miles N of Whitewater P.O. and Hwy 10. Comment
  RSA639589  Camissonia contorta Robert F. Thorne, C. W. Tilforth 1971-5-24 30609 Fresno Ca. 6 miles below Pine Flat Road junction, near headgate of Fresno Irrigation System along Kings River. 122 Comment
  RSA248831  Camissonia guadalupensis subsp. clementina Robert F. Thorne 1973-4-11 42878 Los Angeles San Clemente Island: dunes near Flasher, NW part of island. 3 Comment
  RSA175078  Camissonia hirtella Robert F. Thorne 1963-5-16 31772 Kern 5 miles E of Alta Sierra. 1524 Comment
  RSA773231  Camissonia pallida Robert F. Thorne 1968-4-4 37464 San Bernardino San Gabriel Mountains: San Bernardino National Forest; Just above Lytle Creek Ranger Station Comment
  RSA314654  Camissonia pallida subsp. pallida Robert F. Thorne, Fosberg, Sachet, Herbst 1983-4-23 55412 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  RSA632845  Camissonia pallida subsp. pallida Robert F. Thorne, A. C. Gibson, J. P. Simon, D. J. McGillivray 1970-4-17 39506 -A Los Angeles Mojave Desert: Edge of Angeles National Forest; Grandview Canyon. Ca. 5 miles south of Highway 138, ca. 10 miles southeast of Pearblossom. 1433 Comment
  CAS-BOT-BC160519  Camissoniopsis guadalupensis subsp. clementina Robert F. Thorne 1966-4-15 35991 Los Angeles San Clemente Island: 2/3 mile SSE of Eel Point (and N of Seal Cove), SW side of island 30 Comment
  UCR231133  Cardamine californica R. F. Thorne, Percy C. Everett 1963-4-20 31578 Monterey South Coast Ranges, 13.4 miles SSE of Jolon 335 Comment
  GH378973  Cardamine californica var. integrifolia R. F. Thorne 1965-4-19 34303 Unknown W of Stoetz Road off of Harrison Grade, ca. 2 miles NNE of Occidental 182 Comment
  RSA0097053  Cardionema ramosissimum R. F. Thorne, Percy C. Everett 1965-8-5 35155 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC17743  Carex alma Robert F. Thorne 1965-8-30 35428 San Bernardino Angeles National Forest. San Gabriel Mountains. About 2 miles up Icehouse Canyon. 1783 Comment
  RSA251087  Carex alma Robert F. Thorne, C. W. Tilforth 1973-5-30 43669 San Bernardino East Mojave Desert , New York Mountains: Upper portion of Caruthers Canyon. 1677 Comment
  RSA228999  Carex alma Robert F. Thorne, C. W. Tilforth 1971-6-30 40836 Los Angeles San Gabriel Mountains, Angeles National Forest: 3.3 miles below Alder Saddle along & above S Fork of Little Rock Creek 1433 Comment
  RSA788094  Carex barbarae Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49554 Riverside Santa Ana Mountains: along Ortega Highway (74), about 3 miles south-southwest of El Cariso, near junction of Decker and Morrell Canyons Comment
  SEINET3898816  Carex barbarae Robert F. Thorne, Steve Boyd; Earl Lathrop 1985-7-18 61240 San Diego De Luz Canyon: Along De Luz Creek and near small reservoir, not far from jct of Cottonwood Canyon and De Luz-Murrieta roads.; 0 140 Comment
  RSA337439  Carex buxbaumii Robert F. Thorne, Percy C. Everett 1965-8-7 35197 Humboldt Big Lagoon, south end. 2 Comment
  SEINET10646885  Carex buxbaumii Robert F. Thorne 1965-9-8 Thorne 35293 Humboldt Big Lagoon. 3 Comment
  CAS-BOT-BC245191  Carex diandra Robert Folger Thorne; C. W. Tilforth 1969-9-5 39164 Modoc Clear Lake. 1767 Comment
  CAS-BOT-BC20595  Carex douglasii R. F. Thorne; M. Z. Thorne 1969-7-9 38548 Los Angeles Angeles National Forest. San Gabriel Moutains. Summit of Table Mountain above Big Pines Ranger Station. 2133 Comment
  RSA229057  Carex hassei Robert F. Thorne, C. W. Tilforth, John Dourley 1969-7-29 38888 Los Angeles San Gabriel Mts., Hunt Canyon 3 mi E of Vincent 2332 Comment
  CHSC110090  Carex heteroneura Robert F. Thorne; John Dourley, Selwyn Everist 1971-8-3 41149 Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, meadow along Cold Water Creek. 2743 Comment
  RSA175062  Carex heteroneura Robert F. Thorne, James Henrickson 1963-8-9 33060 Mono Bank of Sardine Creek, 1.5 miles SE of Sonora Pass, Toiyabe National Forest. 2744 Comment
  RSA780392  Carex heteroneura Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-3 41149 Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, Along Cold Water Creek 2744 Comment
  RSA226903  Carex heteroneura var. heteroneura Robert F. Thorne 1971-8-25 41260 Los Angeles San Gabriel Mts., Angeles National Forest. Along trail from Windy Gap to Mt. Hawkins. 2439 Comment
  UC1536051  Carex integra Robert F. Thorne, L. DeBuhr, C. Davidson, and C. W. Tilforth 1976-7-15 47805 San Bernardino ca 1.5 mi due s of w end Big Bear Lake (forest at n edge of Bluff Lake); San Bernardino Mts., Bluff Lake 2316 Comment
  RSA311289  Carex jonesii Robert F. Thorne, M. Z. Thorne 1969-7-10 38366 Los Angeles Mescal Creek Play Area 2042 Comment
  UCR228121  Carex jonesii R. F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47734 A San Bernardino San Bernardino Mtns., San Bernardino National Forest, c. 2 mi along Mill Creek Road and [Forest Service Road] 2N10 from Coldbrook Campground 2226 Comment
  RSA175064  Carex jonesii Robert F. Thorne, James Henrickson 1963-8-9 33013 Mono 9 miles W of Sonora Junction, along Leavitt Creek, Toiyabe National Forest. 2713 Comment
  UC1532818  Carex limosa Robert F. Thorne, L. DeBuhr 1975-8-23 47230 El Dorado just n Luther Pass; Grass Lake 2346 Comment
  CAS-BOT-BC32076  Carex multicaulis Robert F. Thorne 1971-6-26 40594 Los Angeles San Gabriel Mts. Angeles National Forest. On summit of Mt. Wilson. 1737 Comment
  SEINET11633567  Carex multicostata R. F. Thorne, Thorne, M. Z.; DeDecker, M. 1969-1 38741 Inyo Sierra Nevad, E slope, Onion Valley, above Independence Creek 2774 Comment
  RSA633879  Carex nebrascensis Robert F. Thorne, J. P. Simon, C. W. Tilforth 1969-6-24 38142 Riverside San Bernardino National Forest, San Jacinto Mountains: Above James Reserve in Hall Canyon. 1677 Comment
  RSA780394  Carex nervina Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-3 41142 a Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, Along Cold Water Creek 2744 Comment
  RSA287829  Carex pansa Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-29 49018 Santa Barbara Santa Rosa Island. E end between Skunk and East Point 6 Comment
  RSA355832  Carex pansa Robert F. Thorne 1968-6-7 37785 San Luis Obispo Jack Lake, sandy flat area back of dunes near lake, 3 miles south of Oceano Comment
  CHSC99204  Carex praegracilis Robert F. Thorne; Chris Davidson 1978-6-18 52257 San Bernardino Baldwin Lake. Marshy, margin, W side of lake (17.2 miles S along Hwy 18 from Lucerne Valley). 2042 Comment
  HSC82706  Carex praegracilis R. F. Thorne, C. W. Tilforth, John Little 1979-6-15 53177 San Bernardino Holcomb Valley: Sagebrush flat along Holcomb Creek below Hitchcock Ranch, where 3N12 crosses the creek 2180 Comment
  RSA281009  Carex praegracilis Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-21 38709 Inyo Alabama Hills: Moffatt Ranch Road at N end, along small creek (Hogback Creek) 1311 Comment
  RSA171140  Carex preslii Robert F. Thorne, James Henrickson 1963-8-9 32957 Mono 9 miles W of Sonora Junction, along Leavitt Creek, Toiyabe National Forest. 2713 Comment
  RSA191533  Carex rossii Robert F. Thorne 1966-6-20 36542 San Bernardino San Gabriel Mountains, San Bernardino Nationa Forest: Icehouse Saddle 2317 Comment
  RSA0079800  Carex rossii Robert F. Thorne, C. W. Tilforth, John Dourley 1971-7-28 41055 San Bernardino San Gabriel Mts., San Bernardino National Forest: summit ridge of Dawson Peak. 2911 Comment
  RSA249848  Carex sartwelliana Robert F. Thorne, J. P. Simon, C. W. Tilforth 1969-6-24 38116 Riverside San Jacinto Mountains: San Bernardino National Forest. Above James Reserve in Hall Canyon 1677 Comment
  RSA302732  Carex senta Robert F. Thorne, B. A. Prigge, Mike Herter 1979-7-3 53329 .1 San Bernardino San Bernardino Mountains: San Bernardino National Forest. Along Holcomb Creek and 3N08 northwest of Little Bear Peak 1997 Comment
  SD204750  Carex simulata R. F. Thorne 1969-8-2 63397 Siskiyou Klamath Ranges region: Klamath National Forest, Salmon Mountains, Marble Mountain Wilderness, along trail to English Peak. Comment
  RSA0031762  Carex spissa Robert F. Thorne 1977-11-21 50812 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  HSC65804  Carex straminiformis R. F. Thorne, M. DeDecker, M. Z. Thorne 1969-7-22 38803 Inyo Sierra Nevada, E slope of Onion Valley: Independence Creek 2790 Comment
  CAS-BOT-BC116600  Carex subfusca Robert F. Thorne; M. Z. Thorne 1969-7-9 38559 Los Angeles San Gabriel Mts. Angeles National Forest, at Big Pines. 2087 Comment
  CAS-BOT-BC116670  Carex subfusca Robert F. Thorne; Walter Wisura; M. Patterson 1983-7-3 56178 Inyo Panamint Mts. Near mouth of Water (Thorndike) Canyon. 2316 Comment
  RSA233773  Carex subfusca Robert F. Thorne, C. W. Tilforth 1969-9-5 39145 Modoc Margin of small slough along South Fork of Pit River above jct. with West Creek at Public Campground, ca. 6 miles E of Likely. 1402 Comment
  RSA252447  Carex subfusca Robert F. Thorne, C. W. Tilforth 1969-9-5 39155 Modoc Wet mud at margin of Clear Lake. Warner Mountains, Modoc National Forest. 1768 Comment
  RSA302533  Carex subfusca Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53130 San Bernardino San Bernardino Mountains: along Caribou Creek in Van Dusen Canyon, 1.6 mile north of junction with Highway 38 in Big Bear City. 2165 Comment
  RSA640866  Carex subfusca Robert F. Thorne, C. W. Tilforth 1974-5-10 44503 San Bernardino Mojave Desert: New York Mountains, just below talus from Keystone Mine. 1890 Comment
  SD90280  Carex tumulicola Robert F. Thorne 1973-4-11 42804 Los Angeles San Clememte Island; in moist gully leading into Middle Ranch Canyon. 427 Comment
  RSA357167  Carpenteria californica Robert F. Thorne, C. W. Tilforth 1971-5-25 39662 Fresno 4.9 miles E of Auberry along crest of Bald Mountain, above Bald Mountain Creek Comment
  RSA286957  Carpobrotus chilensis R. F. Thorne, Gary D. Wallace, M. Haefs 1977-4-28 48918 Santa Barbara Santa Rosa Island. E end between Skunk and East Points. 5 Comment
  UCD129948  Carthamus tinctorius Robert F. Thorne; P. Everett 1967-6-9 37048 Kern between railroad and Hwy 99, a few miles northwest of Bakersfield. Comment
  RSA636107  Casimiroa edulis Robert F. Thorne 1974-6-1 44710 Los Angeles Claremont. 335 Comment
  CAS-BOT-BC47718  Castela emoryi Robert F. Thorne 1974-9-18 45120 Los Angeles unspecified 274 Comment
  RSA187936  Castilleja affinis Robert F. Thorne 1966-4-28 36200 Los Angeles Santa Catalina Island, road to Renton Mine, Pebbly Beach Canyon 244 Comment
  SBBG105496  Castilleja affinis R. F. Thorne, G. D. Wallace, M. L. Hoefs 1977-4-28 48863 a Santa Barbara Santa Rosa Island Comment
  RSA311340  Castilleja angustifolia Robert F. Thorne, Percy C. Everett 1964-4-18 33843 Inyo Rocky desert slopes 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass 915 Comment
  UC1408976  Castilleja angustifolia Robert F. Thorne 1973-4-28 43241 San Bernardino canyon above Cornfield Springs (Providence Mts, e Mojave Desert); Mojave Desert, Providence Mts. 1158 Comment
  RSA555192  Castilleja angustifolia Robert F. Thorne 1973-5-11 43536 Los Angeles Along Mt. Emma Road, 1/2 mi. E of Little Rock Creek below the dam. 1037 Comment
  RSA730544  Castilleja applegatei subsp. disticha Robert F. Thorne, Stan T. Blake 1965-6-4 34756 Fresno Sequoia National Forest: Above King's River along Hwy 180. 1494 Comment
  UCR146438  Castilleja applegatei subsp. martini R. F. Thorne, Et al. 1969-6-24 38086 Riverside San Jacinto Mtns., San Bernardino National Forest, above James Reserve in Hall Canyon 1677 Comment
  UC1375305  Castilleja applegatei subsp. martinii Robert F. Thorne 1971-6-5 39786 San Bernardino San Sevaine Rd.; San Bernardino National Forest, San Gabriel Mts. 1127 Comment
  RSA336466  Castilleja cinerea Robert F. Thorne, Avi Schmida, Walter Wisura 1978-5-4 51962 San Bernardino San Bernardino National Forest: Baldwin Lake, along N edge. 2080 Comment
  SD124180  Castilleja exserta subsp. exserta Robert F. Thorne, C. W. Tilforth, B. Given, et al. 1979-4-30 52659 Santa Barbara San Miguel Island; uplands west of Ranger Station in north-trending canyon; 121 Comment
  UC1518676  Castilleja exserta subsp. venusta Robert F. Thorne and Barry Prigge 1979-5-10 52861 San Bernardino near junction of Grass Valley Creek and Mojave River 975 Comment
  RSA191119  Castilleja foliolosa Robert F. Thorne, M. Z. Thorne 1967-6-25 37071 Los Angeles Along fire-road between Cobal and Evey Canyons. 732 Comment
  RSA311349  Castilleja foliolosa Robert F. Thorne, Percy C. Everett 1964-4-15 33699 Mariposa 2.3 miles N of Bear Valley. 640 Comment
  RSA639255  Castilleja foliolosa Robert F. Thorne, G. Benny, John Dourley 1971-7-23 41003 San Bernardino San Gabriel Mountains: San Bernardino National Forest; mouth of Day Canyon. 854 Comment
  SD69550  Castilleja foliolosa Robert F. Thorne, P. Everett 1965-6-23 35000 Los Angeles Santa Catalina Island; mouth of Hamilton Canyon, NW of Avalon, north-facing bluff 7 Comment
  UC1536053  Castilleja lanata subsp. hololeuca Robert F. Thorne and C. W. Tilforth, et al. 1976-4-13 47464 Santa Barbara ca 0.5 mi wsw Central Valley laboratory; Santa Cruz Island 213 Comment
  RSA312950  Castilleja linariifolia Robert F. Thorne, James Henrickson 1963-8-10 33092 Mono 1.3 miles beyond Sardine Creek Meadow, ca. 1 mile east of Sonora Pass, Toiyabe National Forest. 2835 Comment
  RSA312975  Castilleja linariifolia Robert F. Thorne, James Henrickson 1963-8-9 32977 Mono 9 miles W of Sonora Junction, Toiyabe National Forest. 2713 Comment
  UC1375419  Castilleja miniata subsp. miniata Robert F. Thorne 1969-7-29 38891 Los Angeles 1.2 mi se Dawson Saddle (near Lodgepole Picnic area at headwaters of Dorr Canyon, n slope of Throop Peak, above Angeles Crest Hwy); San Gabriel Mts., Angeles National Forest, Throop Peak 2331 Comment
  RSA0010940  Castilleja minor subsp. minor Robert F. Thorne, C. W. Tilforth 1970-3-7 39282 Mono Near Mono Lake on W. side near Hwy. 395. 1954 Comment
  RSA38125  Castilleja minor subsp. spiralis Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-14 47903 San Bernardino San Bernardino National Forest. ca. 2 miles along Mill Creek Road and 2N10 from Coldbrook Campground. 2226 Comment
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Sep 17 2007
  UC1409002  Castilleja minor subsp. spiralis Robert F. Thorne, C. W. Tilforth, et al. 1972-6-29 42132 San Bernardino San Sevaine Cow Camp; San Gabriel Mts., San Bernardino National Forest 1453 Comment
  RSA754969  Castilleja plagiotoma Robert F. Thorne 1995-4-4 63072 San Bernardino Whitewater Canyon and vicinity. 427 Comment
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Jan 1 2012
  SBBG31097  Caulanthus lasiophyllus R. F. Thorne 1966-4-28 Los Angeles near upper end of Renton Mine Rd in Pebbly Beach Cyn 259 Comment
  SD90324  Ceanothus arboreus Robert F. Thorne 1970-3-5 39368 Los Angeles Santa Catalina Island, Cherry Valley 60 Comment
  RSA171185  Ceanothus cordulatus Robert F. Thorne, James Henrickson 1963-8-10 33204 Tuolumne Along Deadman's Creek, 4.7 miles W of Sonora Pass, Stanislaus National Forest. 2591 Comment
  RSA279107  Ceanothus crassifolius Robert F. Thorne 1971-3-25 41504 Los Angeles San Gabriel Mountains: Lower Evey Canyon off San Antonio Canyon 716 Comment
  RSA170007  Ceanothus gloriosus var. gloriosus Robert F. Thorne, Percy C. Everett 1964-10-21 34230 Mendocino Haven's Neck just W of Hwy 1. 30 Comment
  RSA229157  Ceanothus greggii var. vestitus Robert F. Thorne, C. W. Tilforth 1971-6-30 40839 Los Angeles San Gabriel Mts., Angeles National Forest: 1.6 miles above Little Sycamore Campground along Little Rock Creek 1280 Comment
  RSA250592  Ceanothus greggii var. vestitus Robert F. Thorne, R. Carolin, C. Davidson 1967-3-23 41579 Los Angeles San Gabriel Mountains, Angeles National Forest: Grandview Canyon; Mojave Desert slopes north of Mile High Ranch. 1372 Comment
  UC1483356  Ceanothus greggii var. vestitus Robert F. Thorne, C. W. Tilforth, L. DeBuhr, et al. 1977-5-13 49296 San Bernardino E Mojave Desert, New York Mountains, Caruthers Canyon 1737 Comment
  RSA0058061  Ceanothus megacarpus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49675 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA177819  Ceanothus megacarpus var. insularis Robert F. Thorne, Percy C. Everett 1965-5-10 34425 Los Angeles Santa Catalina Island. Upper end of White's Landing Road, N slope of Blackjack Mt. 412 Comment
  RSA190812  Ceanothus megacarpus var. insularis Robert F. Thorne, Percy C. Everett 1967-4-17 36768 Santa Barbara Santa Cruz Island. Portazuela Grade in Central Valley. 91 Comment
  RSA190860  Ceanothus megacarpus var. insularis Robert F. Thorne, Percy C. Everett 1967-4-17 36787 Santa Barbara Santa Cruz Island. Eastern Ridge Road at head of Albert Canyon. 274 Comment
  RSA190993  Ceanothus megacarpus var. insularis Robert F. Thorne, Doug Propst, R. Caroline, Reed Rollins 1967-3-18 36733 Los Angeles Santa Catalina Island. Salta Verde, approx. N of Salta Verde Pt. 366 Comment
  UC2042146  Ceanothus papillosus R. F. Thorne and C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  CAS-BOT-BC402196  Ceanothus papillosus var. roweanus R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  RSA341276  Ceanothus parvifolius Robert F. Thorne 1979-5-4 53762 Tulare Moses Mtn 2012 Comment
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May 27 2011
  RSA175238  Ceanothus prostratus Robert F. Thorne 1957-9-3 19031 Del Norte Along Hwy 199 following Smith River, Six Rivers National Forest. Comment
  UC1302437  Ceanothus roderickii Robert F. Thorne, P. Everett 1964-4-16 33765 El Dorado 3-4 mi ENE of Rescue (N slope of Pine Hill) 609 Comment
  SBBG87750  Ceanothus spinosus R. F. Thorne, A. Liston, O. Mistretta 1987-3-15 62275 Unknown Rancho Loma Linda, Las Animas, S of Hwy 1 200 Comment
  CAS-BOT-BC52234  Ceanothus thyrsiflorus Robert F. Thorne; P. Everett 1965-8-4 35125 Mendocino Ca. 11 mi. S of Shelter Cove 472 Comment
  SD247720  Ceanothus tomentosus R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49676 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 456 Comment
  RSA0027778  Ceanothus tomentosus subsp. olivaceus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49676 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] 457 Comment
  CAS-BOT-BC52371  Ceanothus tomentosus var. tomentosus Robert F. Thorne; P. Everett 1964-4-16 33733 Amador 2.5 miles S or SSE of Ione 91 Comment
  CAS-BOT-BC52373  Ceanothus tomentosus var. tomentosus Robert F. Thorne; P. Everett 1964-4-16 33734 Amador 2.5 miles S or SSE of Ione 91 Comment
  RSA246722  Ceanothus velutinus var. laevigatus Robert F. Thorne, Percy C. Everett 1965-8-3 35112 Mendocino Near jct of Branscomb to Wilderness Lodge road, 3 miles from Branscomb 518 Comment
  CAS-BOT-BC52498  Ceanothus vestitus Robert F. Thorne 1969-7-2 38274 Los Angeles San Gabriel Mts., Angeles National Forest 1615 Comment
  UCD129953  Centaurea cineraria Robert F. Thorne; P. Everett 1965-5-11 34680 Los Angeles above summit road from Avalon to airport, Santa Catalina Island. Comment
  SBBG31374  Centaurea melitensis R. F. Thorne with P. C. Everett 1965-5-10 34435 Los Angeles Cape Cyn 274 Comment
  RSA199115  Centaurea melitensis R. F. Thorne 1968-4-28 37492 Santa Barbara Santa Barbara Island. weedy area along tracks above Landing Cove 61 Comment
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Apr 24 2014
  RSA791494  Centaurea melitensis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49610 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  UC763211  Centaurium muehlenbergii Robert F. Thorne 1935-6-1 626 Stanislaus Gobin Ranch Comment
  RSA788969  Centaurium venustum Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49576 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA177667  Centranthus ruber Robert F. Thorne, Percy C. Everett 1965-5-11 34678 Los Angeles Above summit road from Avalon to airport, Santa Catalina Island 61 Comment
  RSA757456  Centranthus ruber Robert F. Thorne, Walter Wisura, Dave Mitchener 1982-1 55194 Riverside along Ortega Highway; Cleveland National Forest 732 Comment
  SBBG31022  Centranthus ruber R. F. Thorne with P. C. Everett 1965-5-11 34678 Los Angeles above summit rd from Avalon to airport 60 Comment
  RSA248034  Centrostegia thurberi var. thurberi Robert F. Thorne 1973-4-29 43276 San Bernardino Near junction of Union Pacific RR and road to Cedar Canyon. 1174 Comment
  RSA177949  Cerastium glomeratum R. F. Thorne 1965-4-20 34322 Sonoma Parker Hill Road ca. 2 1/2 miles N of Santa Rosa and 1 mile N of Sonoma County hospital. 107 Comment
  SD69472  Cerastium glomeratum Robert F. Thorne 1966-4-4 35759 Los Angeles Santa Catalina Island; southeast of Ballast Point and Catalina Harbor, Isthmus. 60 Comment
  RSA252425  Ceratophyllum demersum R. F. Thorne, C. W. Tilforth 1969-9-5 39187 Modoc Pine Creek where it is crossed by Hwy 395, 3.4 miles S of Alturas. 1341 Comment
  RSA342008  Ceratophyllum demersum R. F. Thorne, W. Wisura 1979-8-24 53627 San Bernardino San Bernardino Mountains. W end of Big Bear Lake on N Shore Drive, S of Gray's Landing, water's edge 2056 Comment
  RSA358481  Cercidium microphyllum R. F. Thorne 1974-6-30 44735 San Bernardino Parker Dam 130 Comment
  RSA358483  Cercidium microphyllum R. F. Thorne 1974-6-30 44736 San Bernardino Parker Dam 130 Comment
  UCR48190  Cercidium microphyllum R. F. Thorne 1974-6-30 44735 San Bernardino Sonoran (Eastern Colorado) Desert, Parker Dam; a few miles north [south?] of dam 130 Comment
  RSA758625  Cercocarpus betuloides Robert F. Thorne 1995-4-25 63044 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area. 1067 Comment
  CAS-BOT-BC137235  Cercocarpus betuloides var. blancheae Robert F. Thorne 1967-5-18 36874 Los Angeles Santa Catalina Island: in Wild Boar Gully 121 Comment
  CAS-BOT-BC137236  Cercocarpus betuloides var. blancheae Robert F. Thorne 1967-5-18 36876 Los Angeles Santa Catalina Island: slope of Wild Boar Gully 152 Comment
  RSA190891  Cercocarpus betuloides var. blancheae Robert F. Thorne 1967-5-18 36875 Los Angeles Santa Catalina Island. In bottom of Wild Boar Gully. 137 Comment
  RSA190991  Cercocarpus betuloides var. blancheae Robert F. Thorne 1967-3-18 36753 Los Angeles Santa Catalina Island. In Bullrush Canyon 183 Comment
  RSA199158  Cercocarpus betuloides var. blancheae Robert F. Thorne 1968-5-29 37693 Los Angeles Santa Catalina Island. On north slope of Black Jack Mountain at upper end Swain's Canyon toward Echo Lake. 396 Comment
  RSA363651  Cercocarpus betuloides var. blancheae Robert F. Thorne 1976-4-12 47440 Santa Barbara Santa Cruz Island. Central Valley, arroyo N of Biological Station. 69 Comment
  RSA279254A  Cercocarpus intricatus Robert F. Thorne, James Henrickson 1975-5-3 45364 San Bernardino Providence Mountains; canyon above Bonanza King Mine. 1402 Comment
  RSA334706  Cercocarpus intricatus Robert F. Thorne, A. Shmida 1978-5-5 51852 San Bernardino Cushenbury Canyon: San Bernardino Mountains. 1450 Comment
  GH345509  Cercocarpus traskiae R. F. Thorne, A. D. Propst, R. C. Carolin & R. C. Rollins 1967-3-18 36737 Unknown Santa Catalina Island: slope of dry arroyo, ca. 1-2 m above bottom opposite ridge running down from W bank; Salta Verde, Wild Boar Gully (new name in honor of angry boar which charged but missed me) 167 Comment
  RSA190893  Cercocarpus traskiae Robert F. Thorne 1967-5-18 36900 Los Angeles Santa Catalina Island. Salta Verde, lateral gully to Wild Boar Gully 213 Comment
  SBBG31387  Cercocarpus traskiae R. F. Thorne 1967-5-18 36900 Los Angeles Salta Verde, lateral gully to Wild Boar Gully 213 Comment
  UCD130220  Chaenactis artemisiifolia Robert F. Thorne; C. W. Tilforth 1971-6-17 39957 Los Angeles San Gabriel Mountains, Angeles National Forest. 2 miles up Lower Tujunga Road from Forestry Headquarters. Little Tujunga Creek. 457 Comment
  RSA178084  Chaenactis carphoclinia var. carphoclinia R. F. Thorne 1963-5-23 31850 Imperial 4 miles NW of Ocotillo just outside limits of Anza-Borrego Desert State Park Comment
  RSA349052  Chaenactis fremontii R. F. Thorne, A. Shmida 1978-5-5 51834 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  UCR245896  Chaenactis fremontii R. F. Thorne 1995-3-29 63010 Riverside Transverse Range; San Bernardino Mtns., Whitewater Canyon 600 Comment
  UCR136969  Chaenactis glabriuscula var. glabriuscula R. F. Thorne, G. D. Wallace, M. Haefs 1977-4-28 48915 Santa Barbara Channel Islands, Santa Rosa Island: east end between Skunk and East Points 5 Comment
  SD107876  Chaenactis glabriuscula var. lanosa Robert F. Thorne, G. Wallace and M. Haefs 1977-4-30 49038 Santa Barbara Santa Rosa Island; 1 km north of ranch, in old dunes west of northwest anchorage. 29 Comment
  RSA225671  Chaenactis santolinoides R. F. Thorne 1971-6-12 39867 San Bernardino San Bernardino Mts, Yellow pine forest 2439 Comment
  RSA632858  Chaenactis santolinoides R. F. Thorne, Robert Frampton 1971-6-27 40984 Los Angeles San Gabriel Mountains: Angeles National Forest, East slope West Baldy Peak, along trail from bowl. 2987 Comment
  UCR35843  Chaenactis stevioides R. F. Thorne 1979-5-22 53006 San Bernardino San Bernardino Mountains, San Bernardino Mountains, near relay station on Grapevine Canyon Road, c. 4 air mi south of Fifteenmile Point 1555 Comment
  UC1922017  Chaenactis stevioides Robert F. Thorne 1966-3-26 35720 San Diego BORREGO VALLEY: sandy creasote bush scrub, ca. 2-3.5 miles NE of Borrego Springs. Comment
  RSA249545  Chamaebatia foliolosa Robert F. Thorne, Stan T. Blake 1965-6-5 34810 Fresno Sierra National Forest; 5 miles from Auberry toward Pine Ridge. 1128 Comment
  RSA584752  Chamaesyce fendleri R. F. Thorne, A. Shmida, R. K. Benjamin, C. W. Tilforth, B. A. Prigge 1978-5-10 51350 San Bernardino New York Mountains, near junction of Ivanpah and keystone canyon roads 1494 Comment
  POM22830  Chamaesyce maculata R. F. Thorne 1971-7-7 38929 San Bernardino San Bernardino National Forest; Lytle Creek Ranger Station, Lytle Creek 829 Comment
  RSA284200  Chamaesyce micromera R. F. Thorne, C. W. Tilforth, B. A. Prigge, et al. 1977-10-29 50664 San Bernardino East Mojave Desert: Granite Mountains; Willow Springs Canyon. 1219 Comment
  RSA0023269  Chamaesyce polycarpa var. polycarpa R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49784 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA288835  Chamaesyce revoluta R. F. Thorne 1977-10-29 50749 San Bernardino Providence Mountains: Bonanza King Mine area. 1265 Comment
  RSA640982  Chamaesyce serpillifolia R. F. Thorne, C. W. Tilforth, et al. 1977-10-29 50678 San Bernardino East Mojave Desert: Granite Mountains; Willow Springs Canyon. 1219 Comment
  RSA239961  Chamaesyce setiloba R. F. Thorne 1973-3-10 42623 San Bernardino Mojave Desert, Ibex Pass, on Inyo-San Bernardino County Line, rocky floriferous ridge. 304 Comment
  RSA362039  Cheilanthes clevelandii R. F. Thorne, C. W. Tilforth 1976-4-13 47449 Santa Barbara Santa Cruz Island. 0.5 mi WSW of laboratory, Central Valley. 213 Comment
  RSA0033579  Cheilanthes covillei Robert F. Thorne 1966-10-15 41810 Riverside Dead Indian Canyon: Near Palm Desert at foot of Palms to Pines Highway Comment
  RSA314521  Cheilanthes parryi R. F. Thorne, Walter Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55529 Inyo Funeral Mountains: Rocky slopes along wash at upper end of Red Ampitheater 951 Comment
  RSA334553  Cheilanthes parryi R. F. Thorne, B. Prigge, D. Michener 1978-5-26 51642 San Bernardino Granite Mountains: along stream in Bull Canyon. 1158 Comment
  RSA226102  Chenopodium album R. F. Thorne, C. W. Tilforth 1971-6-17 39944 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  RSA226053  Chenopodium botrys R. F. Thorne, C. W. Tilforth 1971-6-17 39921 Los Angeles 0.6 mi. below Bear Divide station, San Gabriel Mountains, Angeles National Forest 732 Comment
  RSA246908  Chenopodium botrys R. F. Thorne, P. Everett 1965-8-8 35263 b Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  RSA0072903  Chenopodium chenopodioides R. F. Thorne, C. W. Tilforth, J. Henrickson 1969-9-3 39038 Siskiyou Along Hwy 161 on N side of Lower Klamath Lake, Lake Klamath National Wildlife Refuge, 1.9 miles E of junction of Hwys 97 and 161. Comment
  RSA314722  Chenopodium fremontii R. F. Thorne, T. P. Krantz, P. Pack, M. Z. Thorne 1982-9-10 55326 San Bernardino San Bernardino Nat'l Forest: San Gorgonio Wilderness area, South Fork Meadows of Santa Ana River and adjacent forest, from Poop-Out Hill parking lot along Flume Trail through meadows, and back along Pack Trail 2378 Comment
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Jun 7 2007
  RSA286914  Chenopodium multifidum R. F. Thorne, Gary D. Wallace, M. Haefs 1977-4-30 49043 Santa Barbara Santa Rosa Island. ca. 1 kilometer N of ranch due W of Northwest Anchorage at NE end of island 30 Comment
  RSA340152  Chenopodium salinum R. F. Thorne, Walter Wisura 53682 San Bernardino San Bernardino Mountains-Baldwin Lake: NW shore of lake, alkaline margin; 2043 Comment
  SEINET10865183  Chilopsis linearis subsp. arcuata Robert F. Thorne 1977-5-29 Thorne 49272 San Bernardino E Mojave Desert, Kelso Dunes: E of dunes, c 4 miles S of Kelso on Kel-Baker Road. 732 Comment
  RSA286338  Chimaphila umbellata subsp. occidentalis R. F. Thorne 1974-7-30 45015 Plumas Plumas National Forest: Butterfly Valley Botanical Area. 1158 Comment
  RSA356625  Chorizanthe fimbriata Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, E. Lathrop 1975-8-29 47322 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro 595 Comment
  SD245440  Chorizanthe fimbriata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49557 Riverside Santa Ana Mountains: along Ortega Highway (74), about 3 miles south-southwest of El Cariso, near junction of Decker and Morrell Canyons. Comment
  UCD105107  Chorizanthe pungens Robert F. Thorne; P. Everett 1963-6-7 32170 San Luis Obispo San Luis Obispo County: ca. 6.4 miles NW along Cuesta Ridge road from Cuesta Pass Freeway. 609 Comment
  UCSB69534  Chorizanthe pungens Thorne, Robert; Everett, P. 1963-6-7 San Luis Obispo 6.4 miles NW along Cuesta Ridge road from Cuesta Pass Freeway 609 Comment
  RSA190996  Chorizanthe xanti Robert F. Thorne 1963-7-11 32779 Los Angeles Along road to Upper Shake Campground, ca. 3 miles W of Lake Hughes, Angeles National Forest. Comment
  RSA226104  Chorizanthe xanti Robert F. Thorne, C. W. Tilforth 1971-6-17 39892 Los Angeles N slope of San Gabriel Mts., along Soledad Canyon Road, ca. 2 mi. W of Soledad Station 579 Comment
  RSA188561  Chrysolepis sempervirens Robert F. Thorne 1965-8-26 35353 Los Angeles San Gabriel Mountains; Angeles National Forest, near top of Blue Ridge SE of Holiday Hill Ski Lift 2561 Comment
  RSA797253  Chrysothamnus nauseosus subsp. bernardinus R. F. Thorne, Walter Wisura 1977-9-17 50791 Riverside San Jacinto Mountain: slopes of peak 3171 Comment
  RSA334280  Chrysothamnus nauseosus subsp. consimilis R. F. Thorne, Leila Shultz, Tim Krantz 1980-10-3 54879 San Bernardino San Bernardino National Forest, along lower Holcomb Creek where crossed by road N from Fawnskin, N of Delamar Mountain, W of Hitchcock Ranch. 2195 Comment
  POM316422  Chrysothamnus paniculatus R. F. Thorne, Kay Wright, R. K. Benjamin 1982-10-8 55386 Riverside San Bernardino Mountains: Whitewater Canyon, about 3.3 miles north of Whitewater Post Office 595 Comment
  RSA288781  Chrysothamnus paniculatus R. F. Thorne, C. W. Tilforth, B. Prigge 1977-10-29 50760 San Bernardino Providence Mountains: foot of bajada below Bonanza King Mine. Near junction of road to Blair Ranch and Mine 1159 Comment
  RSA314399  Chrysothamnus teretifolius R. F. Thorne 1982-10-8 55403 Riverside San Bernardino Mts.: Side canyon on W side of Whitewater Cyn, ca. 3.3 mi. N of Whitewater Post Office. 595 Comment
  RSA363994  Cichorium intybus R. F. Thorne, C. W. Tilforth 1976-4-15 47555 Santa Barbara Santa Cruz Island: Christy Ranch at W end of island, roadside thru grassland 38 Comment
  RSA252383  Circaea alpina subsp. pacifica Robert F. Thorne, C. W. Tilforth 1969-9-5 39175 Modoc Modoc National Forest, Warner Mts, along Fall Creek below Falls. 1738 Comment
  RSA0011636  Cirsium R. F. Thorne, James Henrickson 1963-8-9 32962 Mono N-facing slope under pines; 9 miles W of Sonora Junction, along Leavit Creek; Toiyabe National Forest 2744 Comment
  RSA640861  Cirsium mohavense R. F. Thorne, C. W. Tilforth 1974-5-29 44576 San Bernardino Tecopa along Amargosa River Valley. 405 Comment
  RSA279748  Cirsium neomexicanum R. F. Thorne, C. W. Tilforth 1974-5-30 44616 Inyo Panamint Mountains, Death Valley Nat'l Monument, near Aguereberry Point.: 1889 Comment
  SEINET12898935 Image available Cirsium occidentale var. coulteri R. F. Thorne, P. C. Everett 1963-1 32181 Unknown Comment
  RSA188188  Cirsium occidentale var. occidentale R. F. Thorne, Percy C. Everett 1965-6-23 35014 Los Angeles Santa Catalina Island, lower part of Hamilton Canyon along stream bed. 61 Comment
  RSA0070910  Cirsium scariosum R. F. Thorne, C. W. Tilforth 1980-8-12 54682 San Bernardino San Bernardino National Forest: South Fork Meadows of the Santa Ana River and adjacent Pinus jeffreyi-Abies concolor forest, San Gorgonio Wilderness Area. 2360 Comment
  RSA310962  Cirsium scariosum R. F. Thorne, James Henrickson 1963-8-9 32961 Mono Toiyabe National Forest, 9 miles W of Sonora Junction, along Leavitt Creek. 2713 Comment
  RSA334679  Cistanthe monandra R. F. Thorne, Avil Shmida 1978-5-5 51760 San Bernardino Lucerne Valley: 0.3 miles W of Lucerne Valley (2.6 miles W of jct with Cushenbury Grade Road) 950 Comment
  RSA283139  Cistanthe monosperma R. F. Thorne, Christopher Davidson, Walter Wisura, L. Goodman, T. P. Krantz 1977-7-21 49915 San Bernardino San Gorgonio Widerness: along Summit Ridge Trail in Anderson Flat. 3232 Comment
  RSA791713  Clarkia Robert F. Thorne, J. P. Simon, Carlos Monoz P. 1969-6-18 38071 Tulare On steep S bank of Left Fork of Kaweah River, ca. 10 miles from Highway to Sequoia National Park 762 Comment
  RSA792631  Clarkia Robert F. Thorne, J. P. Simon, Carlos Munoz 1969-6-18 38055 Tulare On steep south bank of Left Fork of Kaweah River, ca. 10 miles from Highway to Sequoia National Park. 762 Comment
  RSA225731  Clarkia bottae Robert F. Thorne, Arthur C. Gibson 1971-5-22 39709 Los Angeles San Gabriel Mountains: Near mouth of Fish Canyon. 244 Comment
  CAS-BOT-BC164260  Clarkia cylindrica subsp. cylindrica Robert F. Thorne; P. Everett 1967-6-8 37045 Tulare 5.7 miles WNW of Milo on Blue Ridge above Milo Fire Station on road to Yokohl Valley 670 Comment
  CAS-BOT-BC163802  Clarkia purpurea subsp. quadrivulnera Robert F. Thorne; P. Everett 1963-6-8 32185 Monterey 9 miles NW of Bradley along Jolon Road 243 Comment
  RSA191277  Clarkia purpurea subsp. quadrivulnera Robert F. Thorne, Percy C. Everett 1967-6-8 36971 Tulare 6.5 miles N of Springville near Milo along N Fork of Tule River 549 Comment
  CAS-BOT-BC164875  Clarkia rhomboidea Robert F. Thorne 1971-6-26 40608 Los Angeles San Gabriel Mts., Angeles National Forest: N slope San Gabriel Peak 1432 Comment
  CAS-BOT-BC165089  Clarkia rubicunda Robert F. Thorne; P. Everett 1963-6-8 32184 Monterey 9 miles NW of Bradley along Jolon Road 243 Comment
  RSA339838  Clematis ligusticifolia Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53270 San Bernardino San Bernardino Mountains: Cushenbury Springs just below Cement Plant at foot of Cushenbury Canyon. 1220 Comment
  RSA357785  Cleome isomeris R. F. Thorne, M. Z. Thorne 1973-5-30 42673 Riverside Morongo valley Canyon: near mouth at junction of roads to Morongo Valley and Desert Hot Springs, on rocky and sandy outwash of Mission Creek. 488 Comment
  RSA358486  Cleome isomeris R. F. Thorne 1973-09 44723 Los Angeles Santa Catalina Island. Blue Cavern Point Comment
  RSA229096  Collinsia callosa Robert F. Thorne, C. W. Tilforth 1971-6-30 40766 Los Angeles San Gabriel Mountains, Angeles National Forest: S Fork of Little Rock Creek c. 0.3 mile below Alder Saddle 1616 Comment
  SEINET10317253 Image available Collinsia childii Robert F. Thorne 1971-6-5 39808 San Bernardino San Gabriel Mountains, San Gabriel National Forest. Upper San Sevaine Campground, San Sevaine Flats 1676 Comment
  RSA191238  Collinsia childii Robert F. Thorne, Percy C. Everett 1967-6-8 36996 Tulare 8.6 miles ENE of Milo toward Balch Park near head of one of the branches of Rancheria Creek. Sequoia National Forest. 1372 Comment
  RSA0117302  Collinsia parviflora Robert F. Thorne, C. W. Tilforth, John Little 1979-6-14 53076 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end on S side, W of Big Bear City. 2058 Comment
  SBBG132275  Collinsia tinctoria R. F. Thorne, J. P. Simon, C. Munoz 1969-6-18 38052 Tulare steep S bank of left fork of Kaweah River, ca. 10 mi from Hwy to Sequoia National Park 762 Comment
  RSA172217  Collomia tinctoria R. F. Thorne, James Henrickson 1963-8-10 33144 Mono 1.3 miles beyond Sardine Creek meadow, approx. 1 mile E of Sonora Pass, Toiyabe National Forest. 2866 Comment
  UC2042141  Comarostaphylis diversifolia subsp. diversifolia R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA191938  Conioselinum gmelinii R. F. Thorne, P. Everett 1963-6-9 32237 San Mateo On top of San Bruno Mountain on Kamchatka Point near the TV tower 335 Comment
  UC1348938  Conioselinum pacificum Robert F. Thorne and P. Everett 1963-6-9 32237 San Mateo top of San Bruno Mountain 335 Comment
  UCD127323  Conium maculatum Robert F. Thorne; Barry Prigge 1979-5-10 52806 San Bernardino west of Crowder Canyon about 1.5 miles east of Cajon Junction on I-15. 975 Comment
  RSA321650  Conium maculatum R. F. Thorne, Barry Prigge 1979-5-10 52806 San Bernardino Along Crowder Creek 1.5 mi east of Cajon Junction on I-15 976 Comment
  SD69488  Constancea nevinii Robert F. Thorne, P. Everett 1965-6-22 34859 Los Angeles Santa Catalina Island; along Upper Pebble Beach Road. 29 Comment
  RSA754605  Convolvulus arvensis R. F. Thorne 1980-4-27 54149 Los Angeles Santa Catalina Island. From Blackjack Camp into Cape Canyon Comment
  UCR136942  Corallorhiza maculata R. F. Thorne, Christopher Davidson, W. Wisura, Lois Goodman, T. P. Krantz 1977-7-19 49830 San Bernardino San Bernardino Mtns., San Gorgonio Wilderness, along Fish Creek Trail east of Grinnell Mtn 2805 Comment
  RSA356995  Cordylanthus maritimus subsp. maritimus Robert F. Thorne 1975-4-6 45586 Orange Head of Newport Bay. Comment
  RSA355871  Cordylanthus rigidus subsp. rigidus Robert F. Thorne 1968-6-6 37749 Santa Barbara Santa Ynez Mts: Refugio Pass. Comment
  RSA188582  Cordylanthus rigidus subsp. setiger Robert F. Thorne 1965-8-30 35430 San Bernardino Angeles National Forest, Icehouse Canyon 1799 Comment
  UC1523633  Cordylanthus rigidus subsp. setiger Robert F. Thorne, Steve Boyd, and Earl Lathrop 1985-7-18 61201 Riverside Cole Canyon Santa Rosa Plateau, Nature Conservancy Reserve 535 Comment
  RSA249802  Coreopsis bigelovii R. F. Thorne, C. W. Tilforth 1973-4-20 43022 Los Angeles San Gabriel Mountains. 1143 Comment
  RSA771614  Corethrogyne filaginifolia var. pinetorum R. F. Thorne, C. W. Tilforth, John Dourley, R. Scoggin 1972-8-11 42197 Los Angeles Angeles National Forest; Along Angeles Crest Hwy near Three Points. 1829 Comment
  RSA336210A  Crassula aquatica R. F. Thorne, M. Z. Thorne, W. Wisura 1978-5-21 51986 -A Riverside Santa Rosa Plateau: Mesa de Colorado. 610 Comment
  RSA250645  Crassula connata R. F. Thorne, C. W. Tilforth 1973-4-20 43118 San Bernardino San Gabriel Mts.: Cajon Canyon c. 2 mi NW of Devore. 1036 Comment
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May 25 2011
  RSA0073146  Crassula connata var. connata R. F. Thorne, James Hendrickson 1963-5-5 32307 Los Angeles Open, burned-over ridge top, Cobal Canyon, foothills of San Gabriel Mts. 4 mi. North of Claremont 518 Comment
  RSA251477  Crassula connata var. erectoides R. F. Thorne 1973-4-11 42800 Los Angeles San Clemente Island; small pools in gully at head of Middle Ranch Canyon in grassy plateau. 427 Comment
  RSA171119  Crataegus douglasii Robert F. Thorne 1963-5-17 31821 Kern 2 mies W of Weldon near junction of Kernville Rd and Hwy 178. Comment
  RSA770868  Crepis acuminata R. F. Thorne 1963-8-10 33093 -a Mono 1.3 miles beyond Sardine Creek meadow. Ca 1 mile E of Sonora Pass. Toiyabe National Forest. 2774 Comment
  UC1375287  Crepis acuminata Robert F. Thorne, C. W. Tilforth and John Dourley 1971-7-28 41044 San Bernardino Pine Mt. San Bernardino National Forest, San Gabriel Mts. (n-facing slope) 2895 Comment
  UC1375306  Crepis acuminata R. F. and M. Z. Thorne 1969-7-9 38529 Los Angeles just s Big Meadow; San Gabriel Mts., Angeles National Forest, Big Pines 2087 Comment
  RSA178066  Crepis acuminata R. F. Thorne, James Henrickson 1963-8-9 32985 Mono 9 miles W of Sonora Junction, along Leavitt Creek, Toiyabe National Forest. 2988 Comment
  RSA178063  Crepis occidentalis subsp. conjuncta R. F. Thorne, James Henrickson 1963-8-10 33106 Mono 1.3 miles beyond Sardine Creek meadow, 1 mile E of Sonora Pass, Toiyabe Natinal Forest. 2835 Comment
  CAS-BOT-BC175829  Crossosoma californicum Robert F. Thorne; P. C. Everett 1964-2-6 33297 Los Angeles Above Fourth of July Cove. Santa Catalina Island 30 Comment
  GH347412  Crossosoma californicum R. F. Thorne & A. D. Propst 1968-5-29 377706 Unknown Santa Catalina Island: lower end of Hamilton Canyon, ca. .5 mi. NNW of Avalon 30 Comment
  GH347425  Crossosoma californicum R. F. Thorne & P. Everett 1965-5-11 34642 Unknown near junction of roads to Middle Ranch & Little Harbor, Santa Catalina Island 91 Comment
  RSA771952  Crossosoma californicum R. F. Thorne 1968-2-25 37915 Los Angeles Cherry Valley, Santa Catalina Island. Comment
  UCR227641  Crossosoma californicum R. F. Thorne 1968-2-25 37915 Los Angeles Channel Islands, Santa Catalina Island, Cherry Valley 49 Comment
  RSA358485  Croton californicus R. F. Thorne 1974-6-30 44738 San Bernardino Parker Dam: A few miles N of dam. 130 Comment
  RSA787080  Cryptantha R. F. Thorne, C. W. Tilforth 1976-4-14 47531 Santa Barbara Santa Cruz Island; 1.5 miles ESE of Mt. Pleasant, adjacent to manzanita-oak woodland. 412 Comment
  RSA239866  Cryptantha angustifolia R. F. Thorne, C. W. Tilforth 1973-3-8 42614 Inyo Death Valley National Monument: Rhodes Wash below junction with Bradbury Wash. 335 Comment
  RSA353851  Cryptantha angustifolia R. F. Thorne, R. Rutherford 1964-4-10 33589 Imperial Ca 1 mile SE of Glamis on road to Ogilby. Comment
  RSA353856  Cryptantha barbigera R. F. Thorne, Kay Wright, R. K. Benjamin 1982-10-8 55363 Riverside Mouth of Whitewater Canyon near Whitewater Post Office in sandy wash between old and new highway bridges and along Whitewater River. 412 Comment
  UCR177711  Cryptantha barbigera R. F. Thorne, James Henrickson 1975-5-3 45450 San Bernardino Eastern Mojave Desert, east end of Granite Mountains, Snake Spring 1220 Comment
  UCR60532  Cryptantha barbigera R. F. Thorne, James Henrickson 1975-5-3 45366 San Bernardino Eastern Mojave Desert, E slope of Providence Mts., canyon above Bonanza King Mine 1402 Comment
  UCSB56467  Cryptantha clevelandii Thorne, Robert; Everett, P. 1963-6-7 San Luis Obispo Along Cuesta Ridge road, 1.8 miles NW from Cuesta Pass Freeway 548 Comment
  UCD119640  Cryptantha clevelandii Robert F. Thorne; M. Z. Thorne 1973-2-12 42470 Los Angeles Santa Catalina Island, north of Marine Science Station at Fisherman's Cove. 45 Comment
  RSA333635  Cryptantha confertiflora R. F. Thorne, C. W. Tilforth, B. Prigge 1980-6-2 54363 San Bernardino San Bernardino National Forest, Lower Van Dusen Canyon along Caribou Creek Comment
  RSA334604  Cryptantha confertiflora R. F. Thorne 1978-5-5 51854 San Bernardino Cushenbury Canyon: San Bernardino Mountains 1450 Comment
  RSA336129  Cryptantha costata R. F. Thorne 1978-5-30 52154 Imperial Algodones Dunes: N. end of Dunes, ca. 2 miles SSE of Regina 61 Comment
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Oct 3 2011
  RSA632841  Cryptantha decipiens R. F. Thorne, J. P. Simon, John Dourley, H. Caulfield 1970-5-1 39531 Los Angeles Mojave Desert: Along road to Valyermo ca. 1 mile east of Pallett Ranch at foot of grade north of Pinyon Pine Ridge in Shoemaker Canyon. 1402 Comment
  SBBG119374  Cryptantha decipiens R. F. Thorne, J. P. Simon, J. Dourley, H. Caulfield 1970-5-1 39531 Los Angeles rd to Valyermo, ca. 1 mi E of Pallet Ranch at foot of grade N of Pinyon Ridge in Shoemaker Cyn Comment
  RSA334717  Cryptantha gracilis R. F. Thorne 1978-5-25 51731 San Bernardino Providence Mountains: Head of Gilroy Canyon. 1371 Comment
  RSA353853  Cryptantha holoptera R. F. Thorne, P. Everett 1964-4-18 33795 Inyo 35 miles SE of Keeler and ca 3 miles W of Panamint Springs, on roadside in 823 Comment
  RSA309665  Cryptantha intermedia R. F. Thorne, Barry Prigge 1979-5-10 52792 San Bernardino Along Crowder Creek 1 mile east of Cajon Junction on I-15. 976 Comment
  RSA798546  Cryptantha intermedia R. F. Thorne, E. W. Lathrop 1977-5-18 49752 Riverside Santa Ana Mountains: Bear Spring [east slope of Santiago Peak] Comment
  RSA239963  Cryptantha maritima R. F. Thorne, C. W. Tilforth 1973-3-10 42627 b San Bernardino 4.5 miles S of Ibex Pass on Inyo-San Bernardino County line. 305 Comment
  RSA336131  Cryptantha maritima R. F. Thorne 1978-4-29 52118 Imperial West of Chocolate Mountains, ca. 1 mile east of Coachella Canal and west of Melson Well. Comment
  RSA191620  Cryptantha micrantha R. F. Thorne 1963-4-12 32510 San Bernardino About 4 miles ESE of Old Woman Springs, SW edge Mojave Desert. 1067 Comment
  RSA357781  Cryptantha micrantha R. F. Thorne, M. Z. Thorne 1973-3-30 42666 Riverside Morongo Valley Canyon: Near mouth at junction of roads to Morongo Valley and Desert Hot Springs, Mission Creek. 488 Comment
  RSA757013  Cryptantha micrantha R. F. Thorne 1995-4-25 63041 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area 1067 Comment
  RSA0022483  Cryptantha nevadensis var. nevadensis R. F. Thorne, Carol Annable, R. K. Benjamin, Bonnie Busenburg, Mary DeDecker, Paul DeDecker, Wesley Niles, Paul Peterson 1983-5-9 55634 Inyo Death Valley Nat'l Monument, Funeral Mountains, campsite at lower end of Red Amphitheatre above Hole in the Wall, just E of park boundary 768 Comment
  RSA336379  Cryptantha nevadensis var. rigida R. F. Thorne, C. W. Tiforth 1978-6-21 52298 San Bernardino San Gabriel Mountains: Controversy Springs, ca. 4 miles ENE of Wrightwood (by air). 1389 Comment
  RSA757011  Cryptantha nevadensis var. rigida R. F. Thorne 1995-4-25 63054 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area 1067 Comment
  RSA191010  Cryptantha similis R. F. Thorne 1963-5-15 31657 Los Angeles San Gabriel Mountains region: 1 mile W of Los Angeles Co. line on Route 138, ca. 2 miles W of Desert Springs. 1220 Comment
  RSA339284  Cryptantha tumulosa R. F. Thorne, Prigge 1978-5-10 51335 San Bernardino New York Mountains- Keystone Canyon 1677 Comment
  RSA247800  Cryptantha utahensis R. F. Thorne, C. W. Tilforth 1973-3-8 42613 Inyo Death Valley National Monument: Rhodes Wash below junction with Bradbury Wash. 335 Comment
  RSA275531  Cryptantha utahensis R. F. Thorne, C. W. Tilforth, A. Shmida 1978-5-9 51285 San Bernardino Granite Mountains; Coyote Springs (NE corner of range). 976 Comment
  RSA311211  Cryptantha virginensis R. F. Thorne, Walter Wisura, Mark Patterson 1983-7-3 56169 Inyo Panamint Mountains: between Bennett Peak and Telescope Peak in Death Valley National Monument. 2896 Comment
  RSA175137  Cryptogramma acrostichoides Robert F. Thorne 1962-9-25 32349 San Bernardino path. . . above Dollar Lake, San Gorgonio Mountain, San Bernardino National Forest. 2834 Comment
  RSA337717  Cucurbita foetidissima R. F. Thorne, C. W. Tilforth, John Little 1979-6-15 53259 San Bernardino San Bernardino Mountains: Cushenbury Springs just below Cement Plant at foot of Cushenbury Canyon. 1220 Comment
  RSA583966  Cucurbita foetidissima M. Z. Thorne, C. W. Tilforth 1976-4-15 47591 Santa Barbara Santa Cruz Island. Behind dunes and beach (dune plateau); Christy Ranch. 5 Comment
  RSA788244  Cuscuta californica R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49628 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  UC1348877  Cuscuta californica Robert F. Thorne 1966-6-2 36510 Los Angeles near upper end of road leading to White's Landing; Santa Catalina Island 396 Comment
  RSA336397  Cuscuta californica var. californica R. F. Thorne, Dick Tilforth 1978-6-21 52334 Los Angeles San Gabriel Mountains: N of Bob's Gap Comment
  SD107868  Cuscuta californica var. californica Robert F. Thorne, G. Wallace, M. Haefs 1977-4-28 48923 Santa Barbara Santa Rosa Island: east end between Skunk and East Points 4 Comment
  RSA639039  Cuscuta occidentalis R. F. Thorne, C. W. Tilforth 1973-6-20 43996 San Bernardino Providence Mountains: Mitchell Caverns State Park, large canyon N & W of park headquarters 1341 Comment
  SD90523  Cuscuta subinclusa Robert F. Thorne, J. Dourley 1967-10-3 37273 Los Angeles Mt. Baden-Powell; north slope at Vincent Gap. 2285 Comment
  RSA226917  Cuscuta subinclusa R. F. Thorne 1971-8-25 41236 Los Angeles San Gabriel Mountains, Angeles National Forest: Mt. Baden Powell, N slope along trail to Vincent Gap 2134 Comment
  RSA371299  Cuscuta suksdorfii R. F. Thorne, Larry E. DeBuhr, Davidson, C. W. Tilforth 1976-7-15 47816 San Bernardino San Bernardino Mountains: Bluff Lake, ca. 1.5 miles due S of W end of Big Bear Lake 2317 Comment
  RSA545269  Cuscuta umbellata R. F. Thorne 1967-06 41892 Riverside Palm Desert Comment
  CHSC101733  Cymopterus terebinthinus var. californicus Robert F. Thorne; J. Henrickson 1963-8-10 33097 Mono 1.3 miles beyond Sardine Creek meadow, ca. 1 mile E of Sonora Pass, Toiyabe National Forest. 2865 Comment
  SBBG31024  Cynodon dactylon R. F. Thorne 1965-5-10 34511 Los Angeles near upper end of Gallagher Cyn 426 Comment
  SD123839  Cynodon dactylon Robert F. Thorne, John Dourley et al. 1979-4-25 52610 Santa Barbara Santa Cruz Island, Lagoon and beach at Prisoners Harbour on the N sode of island. Comment
  RSA246812  Cyperus eragrostis Robert F. Thorne 1965-9-19 35460 Humboldt Freshwater Lagoon S of Orick. 3 Comment
  RSA798098  Cyperus eragrostis Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49572 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  SBBG128577  Cyperus eragrostis R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49572 Orange San Juan Cyn at Lower Picnic Camp, just below Ortega Hwy (74); Santa Ana Mtns Comment
  RSA755723  Cyperus squarrosus Robert F. Thorne, M. Patterson 1982-8-31 55232 Lake Northwest slope of Mount Hannah, Boggs Lake 854 Comment
  RSA797251  Cystopteris fragilis R. F. Thorne, Walter Wisura 1977-9-17 50789 Riverside San Jacinto Mountain: Long Valley to Round Valley along trail to summit. 2591 Comment
  RSA229195  Cystopteris fragilis R. F. Thorne, C. W. Tilforth 1971-6-30 40791 Los Angeles San Gabriel Mountains. 1554 Comment
  RSA177983  Cytisus scoparius Robert F. Thorne 1965-4-19 34310 Sonoma Guerneville Hwy, 1 mile E of Laguna Road; 4 miles W of Santa Rosa. 46 Comment
  SEINET3828852  Damasonium californicum R. F. Thorne, Larry E. De Buhr 1975-1 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line. 1615 Comment
  RSA284188  Dasyochloa pulchella R. F. Thorne, C. W. Tilforth, B. Prigge 1977-10-28 50642 San Bernardino Granite Mountains: Budweiser Canyon. 1220 Comment
  RSA288786  Dasyochloa pulchella R. F. Thorne, C. W. Tilforth, B. Prigge 1977-10-29 50752 San Bernardino Providence Mountains: Bonanza King Mine area. 1265 Comment
  RSA772568  Dasyochloa pulchella R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-29 47930 San Bernardino New York Mountains: near mouth of Keystone Canyon. 1662 Comment
  SD204775  Dasyochloa pulchella R. F. Thorne, W. Wisura, et al. 1983-5-6 55588 Inyo Northcentral Mojave Desert region: Death Valley National Monument, Funeral Mountains, upper end of Red Amphitheatre. 1341 Comment
  SBBG87899  Datisca glomerata R. F. Thorne, W. Wisura, E. Lathrop, S. Meury 1985-5-18 61164 San Diego dry waterfall tributary to Cottonwood Crk 416 Comment
  UCD169744  Datisca glomerata R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49563 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). 432 Comment
  RSA341273  Datisca glomerata R. F. Thorne, W. Wisura, D. C. Michener, Jim Shevock 1979-9-4 53701 Tulare Near Bear Creek: Along County Road 220. 1220 Comment
  SD107787  Datisca glomerata Robert F. Thorne, Larry DeBuhr 1974-6-28 44772 Los Angeles Angeles National Forest, San Gabriel Mts., W slope of Mt. Islip 1830 Comment
  SD245347  Datisca glomerata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49618 Orange Santa Ana Mountains: Bluffs above San Juan Creek, about 1 mile above San Juan Fire Station. Comment
  SD90219  Datisca glomerata R. F. Thorne, M. Z. Thorne 1968-11-9 37858 Los Angeles Angeles National Forest, San Gabriel Mts, W slope of Mt. Islip 1830 Comment
  SEINET6421141 Image available Datisca glomerata Robert F. Thorne, P. Everett 1967-1 36951 Tulare Sequoia National Forest: N Fork of Middle Fork of Tule River, 1.4 mi up Camp Wishon Road from power plant 975 Comment
  RSA314625  Datura wrightii Robert F. Thorne, F. R. Fosberg, M. H. Sachet, Derral Herbst 1983-4-23 55419 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  RSA306659  Daucus pusillus R. F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52749 San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  SD69451  Daucus pusillus Robert F. Thorne, P. Everett 1965-6-22 34879 Los Angeles Santa Catalina Island, upper portion of Avalon Canyon along roadside. 274 Comment
  CATA2641  Deinandra clementina Robert F. Thorne, C. W. Tilforth, et al. 1979-4-4 52449 Ventura San Nicolas Island: Grassy plateau above beach road NE of living quarters (and NNW of airport terminal) 0 Comment
  RSA338169  Delosperma ecklonis R. F. Thorne, C. W. Tilforth, et al. 52424 Ventura San Nicolas Island. Lower end of Tule Creek and dunes toward coast; N. side of island, E.S.E of Thousand Springs. 24 Comment
  RSA275137  Delphinium parishii Robert F. Thorne, C. W. Tilforth, A. Shmida, B. A. Prigge 1978-5-8 51112 San Bernardino Mojave Desert, Granite Mountains: near Granite cove 1280 Comment
  RSA249818  Delphinium parishii subsp. parishii Robert F. Thorne, Gary D. Wallace 1973-4-25 43372 Los Angeles San Gabriel Mountains, Mojave Desert Slope: 1/4 mi N of Bob's Gap, 3.5 miles S of Llano, N slope of Holcomb Ridge 1159 Comment
  RSA199194  Delphinium parryi Robert F. Thorne, D. Propst 1968-5-27 37645 Los Angeles Santa Catalina Islands. Upper Middle Ranch Canyon. 244 Comment
  RSA356748  Delphinium parryi Robert F. Thorne 1973-5-23 45514 Riverside Santa Rosa Plateau: N side of Mesa de Colorado. Santa Ana Mountains 610 Comment
  RSA188303  Delphinium parryi Robert F. Thorne, M. Z. Thorne 1966-6-2 36531 Los Angeles Santa Catalina Island: Hay Press area 427 Comment
  RSA0029729  Delphinium variegatum subsp. thornei Robert F. Thorne 1973-4-12 42970 Los Angeles San Clemente Island, large canyon S of Mosquito Cove, N of Chenity. 274 Comment
  RSA167759  Dendromecon rigida Robert F. Thorne 1964-4-15 33698 Mariposa 2.3 miles north of Bear Valley. 640 Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  RSA283098  Deschampsia cespitosa R. F. Thorne, Christopher Davidson, Walter Wisura, Lois Goodman, T. P. Krantz 1977-7-20 49894 San Bernardino San Gorgonio Wilderness: High Meadow Springs SE of Alto Diablo. 3079 Comment
  RSA252378  Deschampsia cespitosa subsp. cespitosa R. F. Thorne, C. W. Tilforth 1969-9-6 39195 Sierra Moist margin of Haven Lake (between Goose and Snag Lakes) 1951 Comment
  CAS-BOT-BC198172  Deschampsia danthonioides Robert F. Thorne; Earl Lathrop; O. Clark; S. Carlquist 1968-4-18 37430 Riverside Mesa de Colorado, Rancho, Santa Rosa Plateau 670 Comment
  RSA303684  Deschampsia danthonioides R. F. Thorne, C. W. Tilforth, et al. 53452 San Bernardino Green Valley Lake 2111 Comment
  RSA336172  Deschampsia danthonioides R. F. Thorne, M. Z. Thorne, Walter Wisura 1978-5-21 52003 Riverside Santa Rosa Plateau: Mesa de Colorado 610 Comment
  RSA338405  Descurainia pinnata R. F. Thorne 1980-6-2 54395 San Bernardino Near historic log cabin at upper end of Caribou Creek; upper Holcomb Valley. Comment
  RSA137725  Descurainia pinnata subsp. menziesii R. F. Thorne 1966-4-6 35921 Los Angeles Santa Catalina Island. Bottom of old quarry W of Empire Landing. 76 Comment
  RSA247968  Descurainia pinnata subsp. menziesii R. F. Thorne, Gary D. Wallace 1973-4-24 43441 Los Angeles Antelope Valley, Western Mojave Desert: Lovejoy Buttes, N of Llano, S slope 915 Comment
  UC1349349  Descurainia pinnata subsp. menziesii Robert F. Thorne 1966-4-6 35921 Los Angeles w of Empire Landing (Santa Catalina Island); Santa Catalina Island 76 Comment
  RSA171110  Dicentra ochroleuca Robert F. Thorne 1963-7-26 32823 Orange Trabuco District, Santa Ana Mts, Cleveland National Forest Comment
  RSA188175  Dichelostemma capitatum subsp. capitatum Robert F. Thorne 1966-4-4 35775 Los Angeles Santa Catalina Island. Blue Cavern Point, NE of Isthmus Cove 30 Comment
  SD247585  Dicoria canescens R. F. Thorne, C. W. Tilforth, et al. 1976-10-30 48693 San Bernardino Granite Mountains eastern Mojave Desert: Southern margin of Kelso Dunes, low sand dunes south of main high dunes. 808 Comment
  RSA278885  Dieteria canescens var. leucanthemifolia R. F. Thorne 1978-5-9 51232 San Bernardino Kelso Dunes: southern edge of Kelso Dunes near Bull Canyon Wash from Granite Mountains 731 Comment
  CAS-BOT-BC151058  Diplacus compactus Robert F. Thorne; P. Everett 1967-6-8 37021 Tulare Cleared area above road in yellow pine forest-chaparral transition ca. 6.2 mi. NE of Milo on Balch Park Road - Sequoia National Forest 1158 Comment
  SD245481  Diplacus puniceus Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49559 Riverside Santa Ana Mountains: along Ortega Highway (74), about 3 miles south-southwest of El Cariso, near junction of Decker and Morrell Canyons. Comment
  SD107944  Distichlis littoralis Robert F. Thorne, G. Wallace, M. Haefs 1977-4-28 48922 Santa Barbara Santa Rosa Island: E end and between Skunk and East Points, salina near mouth of Old Ranch Canyon 3 Comment
  SD123463  Distichlis spicata Robert F. Thorne, C. W. Tilforth 1974-5-29 44577 San Bernardino E. MOJAVE DESERT: Tecopa along Armagosa River Valley on very alkaline flat in alkali sink scrub 405 Comment
  RSA175186  Dithyrea californica R. F. Thorne 1963-4-12 32515 San Bernardino About 4 miles ESE of Old Woman Springs, SW edge Mojave Desert. 1067 Comment
  RSA191759  Dodecatheon alpinum subsp. majus Robert F. Thorne, Percy C. Everett 1964-4-16 33774 El Dorado On N slope of Pine Hill, ca. 3-4 mi. ENE of Rescue 610 Comment
  UC1408975  Downingia bacigalupii R. F. Thorne and C. W. Tilforth 1969-9-6 39246 Plumas 1 mi sw Beckwourth (along Feather River); Feather River 1356 Comment
  RSA545382  Downingia bella R. F. Thorne, Larry E. DeBuhr 1975-8-15 46819 Lake Boggs Lake: W of Mt. Hannah, ca. 7.5 miles SSE of Kelseyville and 3 miles NNW of Glenbrook Resort. 854 Comment
  UCR60655  Downingia bella R. F. Thorne 1974-5-23 44682 Riverside Santa Ana Mtns., Santa Rosa Plateau, E of Redonda Mesa, Rancho California 610 Comment
  RSA342815  Downingia cuspidata R. F. Thorne, M. Z. Thorne, W. Wisura 1978-5-21 51982 Riverside Santa Rosa Plateau: Mesa de Colorado. 610 Comment
  RSA729020  Downingia cuspidata R. F. Thorne, Larry E. DeBuhr 1975-8-15 46820 Lake Boggs Lake, c. 7.5 mi. SSE of Kelseyville & 3 mi. NNW of Glenbrook Resort. 854 Comment
  SBBG52795  Draba corrugata R. F. Thorne with C. Davidson 1976-8-14 4617 San Bernardino Fish Crk Meadows, at end of Forest Service Rd 1N05, S of Heart Bar St. Park 2438 Comment
  RSA226930  Draba corrugata var. corrugata R. F. Thorne 1971-8-25 41264 Los Angeles ANGELES NATIONAL FOREST: Lily Spring on northwest slope of Mt. Hawkins. Comment
  RSA639139  Draba corrugata var. corrugata R. F. Thorne 1967-10-28 37405 San Bernardino Trail from Thunder Mountain saddle to Telegraph Peak 2560 Comment
  RSA275533  Dudleya arizonica R. F. Thorne, C. W. Tilforth, A. Shmida, B. A. Prigge 1978-5-8 51196 San Bernardino Granite Mountains, lower end of Bull Canyon, NNW side of Granite Mts., S of Kelso Dunes 853 Comment
  SD124956  Dudleya edulis Robert F. Thorne, Steve Boyd and Earl Lathrop 1985-7-18 61228 San Diego De Luz Canyon; along De Luz Creek and near small reservoir. 139 Comment
  SD123970  Dudleya greenei Robert F. Thorne, Walter Wisura, et al. 1979-4-25 52624 Santa Barbara Santa Cruz Island; rocky, north-facing bluff behind beach at Prisoners Harbor on the north side of the island. 0 Comment
  RSA225720  Dudleya lanceolata R. F. Thorne, A. C. Gibson 1971-5-22 39773 Los Angeles Fish Canyon 335 Comment
  SD68993  Dudleya lanceolata Robert F. Thorne, Lindsay Smith 1966-5-28 36389 San Bernardino San Gabriel Mountains, San Bernardino National Forest; rocky ledges near Sheep Spring. 1054 Comment
  RSA178065  Dugaldia hoopesii R. F. Thorne, James Henrickson 1963-8-9 33054 Mono Bank of Sardine Creek, 1.5 miles SE of Sonora Pass, Toiyabe National Forest. 2744 Comment
  RSA246598  Dulichium arundinaceum Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42313 Plumas Plumas National Forest: Snake Lake ca. 4 miles NW of Quincy. 1220 Comment
  RSA278237  Dyssodia cooperi R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-14 49367 San Bernardino E Mojave Desert, New York Mountains: along Union Pacific Railroad ca. 0.5 mile W of Ivanpah at S side of Ivanpah Valley. 1067 Comment
  RSA279015  Ehrharta calycina R. F. Thorne, C. W. Tilforth 1971-4-9 41555 Los Angeles Angeles National Forest: below entrance to wooded area of San Dimas Canyon near San Dimas Creek 381 Comment
  SD69663  Ehrharta calycina Robert F. Thorne, Reed Rollins et al 1967-5-18 36741 Los Angeles Santa Catalina Island, above lower end Bulrush Canyon 244 Comment
  RSA198949  Elatine californica R. F. Thorne, E. W. Lathrop, P. A. Munz 1968-5-8 37560 Riverside Santa Rosa Plateau: on Mesa de Colorado, Rancho California. 671 Comment
  RSA234014  Elatine californica R. F. Thorne, E. W. Lathrop 1969-5-12 37921 Riverside Santa Ana Mountains, Santa Rosa Plateau, Mesa de Colorado, Rancho California. 624 Comment
  RSA334213  Elatine gracilis R. F. Thorne, R. K. Benjamin, T. P. Krantz 1980-9-9 54723 San Bernardino San Bernardino National Forest: Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area 2378 Comment
  RSA286257  Elatine heterandra R. F. Thorne 1974-7-31 44970 Lake Boggs Lake: N of Harrington Flat Road. 915 Comment
  UCR222473  Elatine heterandra R. F. Thorne, M. Patterson 1982-8-31 55236 Lake North Coast Range, northwest slope of Mount Hannah, Boggs Lake 854 Comment
  CAS-BOT-BC242389  Eleocharis bella Robert Folger Thorne; et al 1969-9-4 39112 Modoc N Fork of Pit River, 3.4 mi. N of Alturas where crossed by Hwy 395. 1341 Comment
  SEINET10786956  Eleocharis coloradoensis Robert F. Thorne, Larry E. DeBuhr; Christopher Davidson; C. W. Tilforth 1976-7-15 Thorne 47675 San Bernardino San Bernardino Mountains: 1/4 mile E of Highway 18 across E end of Big Bear Lake. 2073 Comment
  CAS-BOT-BC112918  Eleocharis macrostachya Robert F. Thorne; E. Lathrop; S. J. Carlquist 1968-4-18 34756 Riverside Shallow water at W end of vernal marsh on Mesa de Colorado, Rancho California. 670 Comment
  UC1950030  Eleocharis macrostachya R. F. Thorne, E. W. Lathrop, S. Bickstrom-Sternberg, B. Martin May 1982 55212 Riverside Peninsular Ranges; Santa Ana Mountains region: SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road. Comment
  CAS-BOT-BC113048  Eleocharis montevidensis Robert F. Thorne; M. Z. Thorne 1967-7-19 37130 Los Angeles San Gabriel Mts. Yucca Flats Summer Home Tract 1249 Comment
  RSA177700  Eleocharis palustris Robert F. Thorne, Percy C. Everett 1965-5-11 34661 Los Angeles Santa Catalina Island: Picnic Ground. 427 Comment
  RSA334548  Eleocharis parishii Robert F. Thorne, B. A. Prigge, D. C. Michener 1978-5-26 51644 San Bernardino Granite Mountains: central Bull Canyon. 1067 Comment
  RSA246895  Eleocharis radicans Robert F. Thorne, Percy C. Everett 1965-8-9 35342 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  SD69448  Elymus condensatus Robert F. Thorne, P. Everett 1965-6-22 34869 Los Angeles Santa Catalina Island; up Pebble Beach Canyon, along roadside 29 Comment
  RSA278733  Elymus elymoides R. F. Thorne, Walter Wisura 1978-5-26 51579 San Bernardino Mojave Desert, Granite Mountains: Upper Bull Canyon. 1646 Comment
  RSA311169  Elymus elymoides R. F. Thorne, Walter Wisura, M. Patterson, et al. 1983-7-3 56167 Inyo Panamint Mountains: between Bennett Peak and Telescope Peak in Death Valley National Monument. 2896 Comment
  SFV22106  Elymus trachycaulus R. F. Thorne, J. Dourley 1967-10-10 37362 Los Angeles San Gabriel Mountains 1.5 miles east of Dawson Saddle. Cienega on cool, moist, shaded, north-facing slope by Angeles Crest Highway. 2332 Comment
  RSA228899  Elymus trachycaulus subsp. trachycaulus R. F. Thorne 1971-8-25 41268 Los Angeles San Gabriel Mountains, Angeles National Forest: Lily Spring on NW slope of Mt. Hawkins. Comment
  RSA308023  Encelia actoni R. F. Thorne, C. W. Tilforth, B. Prigge, Christopher Davidson 1979-5-22 52962 San Bernardino South of Santa Fe Railroad near Grapevine Canyon Road ca. 3 air miles SSE of Fifteen Mile Point, near junction of Oreole and Flicker Streets. 1098 Comment
  RSA247833  Encelia farinosa var. farinosa R. F. Thorne, C. W. Tilforth 1973-3-8 42573 Inyo Death Valley National Monument: Rhodes Wash below junction with Bradbury Wash. 335 Comment
  RSA247067  Encelia virginensis var. virginensis R. F. Thorne, C. W. Tilforth 1973-6-19 43936 San Bernardino E Mojave Desert, Providence Mountains: Globe Canyon, N end of mountains c. 7 miles NE of Kelso (by road); upper part of canyon below mine 1402 Comment
  CAS-BOT-BC126751  Ephedra R. F. Thorne; Jim Henrickson 1975-5-4 45475 San Bernardino Mojave Desert; East Mojave Desert region: E. Mojave Desert, E. end of Granite Mtns.: above Cottonwood Spring 1372 Comment
  HSC62741  Ephedra californica R. F. Thorne, W. A. Tilforth, L. Shultz, R. K. Benjamin, J. Hogge 1980-4-16 54115 Riverside SAN Bernardino MTS. : Sandy beach along Whitewater River, E of bridge and levee and below W-facing bluff 412 Comment
  LA81891  Ephedra californica Robert F. Thorne; 1964-5-3 33851 Riverside near hwy ca 4 mi. S of Morongo Valley and ca 3 mi. S of San Bernandino Co. line Comment
  CAS-BOT-BC81708  Ephedra funerea Robert F. Thorne; P. Everett 1964-4-18 33801 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass 914 Comment
  CAS-BOT-BC81870  Ephedra trifurca Robert F. Thorne; Robert Rutherford 1964-4-10 33570 Imperial sand dunes ca 17 miles w. of Yuma near rest stop on Hwy. 80, SE Imperial County Comment
  RSA310768  Ephedra viridis Robert F. Thorne, Walter Wisura, Mark Patterson 1983-7-1 56077 Inyo Panamint Mts: Lower Wildrose Canyon above Ranger Station at Wildrose Campground, Death Valley National Monument 1463 Comment
  RSA230369  Epilobium angustifolium subsp. circumvagum Robert F. Thorne, M. Z. Thorne 1969-7-10 38349 Los Angeles San Gabriel Mountains, Angeles National Forest: E. Blue Ridge, Holiday Hill, 2460 Comment
  RSA252401  Epilobium brachycarpum Robert F. Thorne, C. W. Tilforth 1969-9-6 39263 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  RSA279092  Epilobium canum subsp. canum Robert F. Thorne, D. Propst 1974-9-10 45118 Los Angeles Santa Catalina Island: Big Spring area 122 Comment
  CAS-BOT-BC402161  Epilobium canum subsp. garrettii R. F. Thorne; C. W. Tilforth; Larry E. DeBuhr; B. Tucker; R. K. Benjamin; et al 1976-10-30 48641 San Bernardino Granite Mountains, eastern Mojave Desert: bottom of canyon west of Cottonwood Springs. 1341 Comment
  RSA230263  Epilobium canum subsp. latifolium Robert F. Thorne 1969-7-2 38303 Los Angeles San Gabriel Mountains, Angeles National Forest: Angeles Crest Highway, 3.2 miles WSW of Cloudburst Summit. 1982 Comment
  RSA334207  Epilobium canum subsp. latifolium Robert F. Thorne, R. K. Benjamin, T. Krantz 1980-9-9 54749 San Bernardino San Bernardino National Forest: Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area. Along switch-backs on trail to Dry Lake 2683 Comment
  RSA311280  Epilobium ciliatum subsp. ciliatum Robert F. Thorne 1969-7-2 38295 Los Angeles Angeles National Forest: near Chilao Creek, Upper Chilao Campground. 1616 Comment
  RSA252403  Epilobium ciliatum subsp. ciliatum Robert F. Thorne, C. W. Tilforth 1969-9-7 39284 El Dorado Grass Lake, S of Hwy. 89, about 0.5 mile W of Luther Pass 2317 Comment
  RSA755160  Epilobium ciliatum subsp. ciliatum Robert F. Thorne, Walter Wisura, Dave Michener, Jim R. Shevock 1979-9-4 53752 Tulare Moses Mountain: Small meadow moistened by seepage, sloping down toward Tule River in Canyon 2104 Comment
  SEINET9081497 Image available Epilobium ciliatum subsp. ciliatum R. F. Thorne, M. Z. Thorne 1969-1 38416 Los Angeles San Gabriel Mts., Angeles National Forest: Moist sandy flat along stream just E of Holiday Hill Ski area, Swarthout Valley 1996 Comment
  UC1951302  Epilobium ciliatum subsp. glandulosum Robert F. Thorne and P. Everett 1965-8-9 35347 Humboldt along Hwy. 101 about 3 mi. N of Eureka. Comment
  RSA175086  Epilobium ciliatum subsp. watsonii Robert F. Thorne 1957-8-29 18948 Monterey Monterey Peninsula. Comment
  RSA250376  Epilobium glaberrimum Robert F. Thorne, John Dourley 1967-10-3 37284 Los Angeles Mt. Baden-Powell: Lamel Spring 2378 Comment
  RSA758844  Epipactis gigantea Robert F. Thorne, Walter Wisura, B. Busenburg, R. K. Benjamin 1983-5-9 55711 Inyo Death Valley Nat'l Monument, Funeral Mountains, Keane Wonder Springs 1189 Comment
  RSA225700  Equisetum X ferrissii R. F. Thorne, C. W. Tilforth 1971-6-17 39939 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  SD245162  Equisetum telmateia subsp. braunii R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49599 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  SEINET3866732  Equisetum telmateia var. braunii L. Thorne, N. Thorne 1990-7-4 14 San Mateo Butano Canyon above Pescadero.; 0 Comment
  RSA798101  Eragrostis mexicana subsp. virescens R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49567 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  CAS-BOT-BC299885  Erechtites glomeratus Robert F. Thorne; P. Everett 1963-6-9 32212 San Mateo Near TV tower on top of San Bruno Mountain 335 Comment
  RSA638987  Erechtites glomeratus R. F. Thorne, Percy C. Everett 1965-8-8 35239 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  CAS-BOT-BC160021  Eremothera boothii subsp. condensata Robert F. Thorne; R. Rutherford 1964-4-11 33624 Imperial Araz Wash, between Pasadena & Stud Mts., Cargo Muchacho Mts. 304 Comment
  RSA0114406  Eriastrum densifolium subsp. austromontanum R. F. Thorne, Lindsay Smith 1966-5-28 36408 San Bernardino Cajon Canyon: ca. 1 mile W of Cajon Junction 915 Comment
  RSA0105693  Eriastrum densifolium subsp. elongatum R. F. Thorne, Walter Wisura, et al. 1979-8-24 53666 San Bernardino Holcomb Valley: near junction of Johnston Grade and Rose Mine Road above Cactus Flat. 1837 Comment
  UCR227744  Eriastrum eremicum R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, Robert K. Benjamin, et al. 1976-10-29 47919 San Bernardino East Mojave Desert, New York Mountains, near mouth of Keystone Canyon 1662 Comment
  RSA0120351  Eriastrum eremicum subsp. eremicum R. F. Thorne, B. A. Prigge, D. C. Michener, S. Meyer, W. Wisura 1978-5-25 51661 San Bernardino Providence Mountains: Along rocky road to Bonanza King Mine. 1250 Comment
  RSA0120413  Eriastrum eremicum subsp. eremicum R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-29 47919 San Bernardino New York Mountains: near mouth of Keystone Canyon. 1662 Comment
  RSA188301  Eriastrum filifolium R. F. Thorne 1966-6-2 36527 Los Angeles Santa Catalina Island: Ridge top between Moonstone and White Coves 30 Comment
  RSA0121818  Eriastrum sapphirinum subsp. dasyanthum R. F. Thorne, C. W. Tilforth 1971-6-17 39963 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  CAS-BOT-BC334242  Eriastrum sapphirinum subsp. sapphirinum Robert F. Thorne; Larry DeBuhr; Christopher Davidson; C. W. Tilforth 1976-7-15 47631 San Bernardino San Bernardino National Forest, ca. 1.5 mi SE of Rebel Ridge, W of Sawmill Canyon. 2165 Comment
  RSA0124651  Eriastrum signatum R. F. Thorne, Tim Krantz 1982-8-20 55140 San Bernardino San Bernardino National Forest: Lower Holcomb Creek Botanical Area, near creek where crossed by road N from Fawnskin, N of Delamar Mt., W of Hitchcock Ranch 2195 Comment
  RSA0124842  Eriastrum wilcoxii R. F. Thorne, Walter Wisura, Mark Patterson 1983-7-4 56185 Inyo Panamint Mountains: Hike up Water (Thorndike) Canyon from mouth to upper end on the north slope of Rogers Peak, Death Valley National Monument; elevation ca. 7440 to 7900 ft. 2316 Comment
  RSA791170  Ericameria cuneata R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48638 San Bernardino Granite Mountains, eastern Mojave Desert: Cottonwood Springs, near campsite at end of road 1311 Comment
  RSA246626  Ericameria cuneata var. cuneata R. F. Thorne, L. DeBuhr, C. W. Tilforth 1972-9-19 42299 Nevada Above and N of Bowman Lake dam, Tahoe National Forest 1677 Comment
  RSA334385  Ericameria cuneata var. spathulata R. F. Thorne, R. D. Stone, S. Castagnoli, Greg de Nevers 1980-9-21 54801 San Bernardino Kingston Mountains: North-facing slope of Kingston Peak 2180 Comment
  RSA284486  Ericameria laricifolia R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1976-10-29 48610 San Bernardino E Mojave Desert, New York Mts, Cottonwood Canyon. 1646 Comment
  RSA307375  Ericameria linearifolia R. F. Thorne, B. A. Prigge 1979-5-10 52782 San Bernardino Along Crowder Creek 1 mile east of Cajon Junction on I-15. 976 Comment
  RSA336068  Ericameria linearifolia R. F. Thorne, A. Shmida 1978-5-5 51842 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  SD69872  Ericameria pachylepis Robert F. Thorne, D. Propst 1968-5-27 37622 Los Angeles Santa Catalina Island; Skull Canyon between Cape and Middle Canyons. 245 Comment
  RSA279094  Ericameria palmeri var. pachylepis R. F. Thorne, D. Propst, Mark Hoefs 1974-9-12 45114 Los Angeles Santa Catalina Island, near Empire Landing. 46 Comment
  RSA233750  Erigeron breweri var. jacinteus R. F. Thorne, Hansjorg Eichler 1968-7-27 37850 San Bernardino Talus-covered saddle just E of Baldy Summit 2851 Comment
  RSA290770  Erigeron clokeyi R. F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-10 44858 Inyo Panamint Moutains: Death Valley National Monument. Saddle between Bennet and Rogers Peaks. 2987 Comment
  UC1483304  Erigeron concinnus var. concinnus Robert F. Thorne, W. Wisura, C. Davidson, and B. Prigge 1977-5-26 49176 San Bernardino along trail to, near mouth of Fir Canyon; Mojave Desert, Clark Mt. Range 1584 Comment
  RSA316176  Erigeron divergens R. F. Thorne 1982-6-18 55075 San Bernardino San Bernardino Mountains: Nature Conservancy Botanical Preserve, north of east end of Baldwin Lake 2050 Comment
  RSA191631  Erigeron foliosus var. foliosus R. F. Thorne, M. Z. Thorne 1966-8-29 36594 Los Angeles small, dry depression south of Crystal Lake 1722 Comment
  RSA636111  Erigeron glaucus R. F. Thorne 1974-7-29 45079 Humboldt Samoa Dunes: Between Humboldt Bay and Pacific Ocean. Comment
  UCR222471  Erigeron parishii R. F. Thorne, R. K. Benjamin, T. P. Krantz 1982-8-20 55111 San Bernardino Transverse Ranges; San Bernardino Mtns, San Bernardino National Forest, N slope of San Bernardino Mtns., lower end of Cushenbury Grade on property of Kaiser Cement Company, in Marble Canyon above quarry 1646 Comment
  RSA191750  Erigeron peregrinus subsp. callianthemus R. F. Thorne, James Henrickson 1963-8-10 33173 Tuolumne Along Deadman's Creek, 4.2 miles W of Sonora Pass, Stanislaus National Forest. 2668 Comment
  RSA291899  Erigeron pygmaeus R. F. Thorne, M. Z. Thorne, M. DeDecker 1969-7-20 38669 Mono White Mountains, Inyo Nat'l Forest: NE slope of Sheep Mountain at headwaters of Cottonwood Creek drainage. 3567 Comment
  LA103748  Eriodictyon angustifolium Robert F. Thorne; C. W. Tilforth 1973-5-30 43604 San Bernardino New York Mountains, upper portion of Caruthers Canyon 1676 Comment
  RSA249546  Eriodictyon californicum Robert F. Thorne, Stan T. Blake 1965-6-4 34734 Fresno Above King s River Canyon, 4 miles W of Boyden Cave. 1037 Comment
  RSA356045  Eriodictyon californicum Robert F. Thorne, C. W. Tilforth 1971-5-24 39646 Fresno 4.4 miles N of Auberry near Kerckhoff Reservoir 610 Comment
  RSA226906  Eriodictyon crassifolium var. nigrescens Robert F. Thorne, C. W. Tilforth 1971-6-17 39975 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  GH402903  Eriodictyon traskiae R. F. Thorne & A. D. Propst 1968-5-29 37694 Unknown Santa Catalina Island: on N slope Black Jack Mt at upper end Swain's Canyon toward Echo Lake 396 Comment
  CAS-BOT-BC214383  Eriodictyon trichocalyx R. F. Thorne; Hj. Eichler 1968-7-27 37808 San Bernardino San Gabriel Mts., Angeles National Forest: just above turn-off to Icehouse Canyon 1499 Comment
  RSA333629  Eriodictyon trichocalyx Robert F. Thorne, B. Prigge, C. W. Tilforth 1980-6-2 54255 San Bernardino Near Mojave River, S of Hesperia and 5.2 miles N of junction of Silverwood Lake and Hesperia roads. 976 Comment
  RSA339049  Eriogonum brachyanthum Robert F. Thorne, Rolf, Gertrud Dahlgren 1979-8-22 53559 San Bernardino Joshua Tree National Monument: Indian Cove 976 Comment
  RSA252337  Eriogonum brachypodum Robert F. Thorne, C. W. Tilforth 1973-6-1 43753 San Bernardino Eastern Mojave Desert, Kingston Mountains. c. 2 miles ENE of Horsethief Springs by road near Blackwater Mine 1280 Comment
  SD90301  Eriogonum cithariforme Robert F. Thorne, C. W. Tilforth et al. 1972-6-29 42110 Los Angeles San Gabriel Mts., Angeles National Forest: c. 2 mi SE of Valyermo on road from Jackson Lake 1431 Comment
  UCD99842  Eriogonum crocatum Robert F. Thorne; M. Z. Thorne 1968-6-8 37721 Ventura lower end of Long Grade Canyon, 0.5 mile east of Camarillo State Hospital. Comment
  CAS-BOT-BC242569  Eriogonum crocatum Robert F. Thorne; M. Z. Thorne 1968-6-8 37721 Ventura Santa Monica Mts.: lower end of Long Grade Canyon ca. .5 mi. E. of Camarillo State Hospital Comment
  UCR223410  Eriogonum davidsonii R. F. Thorne, M. Z. Thorne 1969-7-10 38398 Los Angeles Transverse Ranges; San Gabriel Mountains, Angeles National Forest, Mescal Creek Play Area 2027 Comment
  CAS-BOT-BC242745  Eriogonum davidsonii R. F. Thorne; M. Z. Thorne 1969-7-10 38398 Los Angeles San Gabriel Mts., Angeles National Forest: along Mescal Creek 2026 Comment
  RSA275788  Eriogonum deflexum var. baratum Robert F. Thorne, Walter Wisura, C. Davidson 1977-5-27 49095 San Bernardino E Mojave Desert, Clark Mountain Range; above Pachalka Spring. 1524 Comment
  UCR227824  Eriogonum deflexum var. deflexum R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, Robert K. Benjamin, et al. 1976-10-29 47915 San Bernardino East Mojave Desert, New York Mountains, near mouth of Keystone Canyon 1662 Comment
  CAS-BOT-BC250159  Eriogonum fasciculatum var. polifolium R. F. Thorne; Hj. Eichler 1968-7-27 37810 San Bernardino San Gabriel Mts., Angeles National Forest: SW-facing rocky slope just above turn-off to Icehouse Canyon 1499 Comment
  RSA247073  Eriogonum fasciculatum var. polifolium Robert F. Thorne, C. W. Tilforth 1973-6-19 43963 San Bernardino Providence Mountains: N end of Mts. c. 7 mi SE of Kelso (by road); upper part of Globe canyon below the Globe mine 1463 Comment
  UC1349044  Eriogonum giganteum Robert F. Thorne 1966-9-16 26724 Los Angeles Lookout Point se Pebbly Beach; Santa Catalina Island 45 Comment
  SBBG31239  Eriogonum giganteum var. giganteum R. F. Thorne with P. C. Everett 1965-6-23 Los Angeles lower portion of Hamilton Cyn 76 Comment
  SEINET11931559  Eriogonum gracilipes M. Z. Thorne, DeDecker, M. 1969-1 38671 Mono White Mts., Inyo Nat'l Forest, alpine fell field NE slope of Sheep Mt, at headwaters of Cottonwood 3566 Comment
  RSA376592  Eriogonum grande var. grande Robert F. Thorne 1976-4-13 47516 Santa Barbara Santa Cruz Island. On east facing slope of Cuesta Ridge just E of head of Canada Cervada 412 Comment
  SD123909  Eriogonum grande var. rubescens Robert F. Thorne 1979-4-30 52672 Santa Barbara San Miguel Island; on sandy slopes down at the base of sea bluffs about Cuyler Harbor 121 Comment
  RSA284478  Eriogonum heermannii var. floccosum Robert F. Thorne, Tilforth, DeBuhr 1976-10-29 47988 San Bernardino New York Mts. Keystone Canyon above Keystone Spring. 1799 Comment
  RSA0051395  Eriogonum heermannii var. floccosum Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48662 San Bernardino Granite Mountains, eastern Mojave Desert: Sandy plateau area ca. 1 mile east of Granite Peak. 1860 Comment
  HSC24672  Eriogonum heermannii var. heermannii R. F. Thorne, C. W. Tilforth, John Dourley 1969-7-29 38938 San Bernardino San Bernardino National Forest: ca. 4.5 mi. NE of Wrightwood along Highway 2; 1524 Comment
  RSA275467  Eriogonum heermannii var. sulcatum Robert F. Thorne, Larry E. DeBuhr, W. Wisura, B. A. Prigge 1977-6-24 49517 San Bernardino E Mojave Desert, Kingston Mts: c. 1 mi. NE of Tecopa Pass and Horse Thief Springs near Blackwater Mine 1280 Comment
  RSA284287  Eriogonum inflatum var. inflatum Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1976-10-29 47938 San Bernardino New York Mountains: near mouth of Keystone Canyon. 1662 Comment
  RSA311195  Eriogonum intrafractum Robert F. Thorne, Walter Wisura, Patterson 1983-7-2 56133 Inyo Panamint Mts: Death Valley National Monument, Along limestone ridge (Tetracoccus Ridge) blocking Aguereberry Point from Death Valley. 1829 Comment
  UC1536079  Eriogonum kennedyi var. austromontanum Robert F. Thorne, L. DeBuhr, C. Davidson, C. W. Tilforth 1976-7-15 47642 San Bernardino pebble plain on dry, gravelly mesa top San Bernardino Mts., San Bernardino Natl. Forest 2194 Comment
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Jan 3 2012
  UC1478648  Eriogonum latifolium Robert F. Thorne 1974-7-29 45074 Humboldt Samoa Dunes Comment
  RSA176255  Eriogonum latifolium Robert F. Thorne, Percy C. Everett 1963-6-9 32238 San Mateo On top of San Bruno Mountain 335 Comment
  RSA171062  Eriogonum maculatum Robert F. Thorne, Percy C. Everett 1964-4-18 33839 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass. 915 Comment
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Oct 10 2013
  RSA334701  Eriogonum maculatum Robert F. Thorne, Avi Shimda 1978-5-5 51797 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  RSA0051417  Eriogonum maculatum R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin 1976-10-30 48690 San Bernardino Granite Mountains, eastern Mojave Desert: Southern margin of Kelso Dunes, low sand dunes south of main, high dunes 808 Comment
  SEINET3405939 Image available Eriogonum mohavense R. F. Thorne, G. D. Wallace 1973-4-24 43447 Los Angeles Western Mojave Desert; Antelope Valley, Lovejoy Buttes, north of Llano 915 Comment
  UC1375354  Eriogonum mohavense Robert F. Thorne and C. W. Tilforth 1971-6-29 50677 Los Angeles ca. 1 1/2 mi s, in Soledad Canyon junction of Aliso Creek wash and Santa Clara river (n slope of San Gabriel Mts.); San Gabriel Mts., Angeles National Forest, Soledad Canyon 883 Comment
  RSA251986A  Eriogonum nidularium Robert F. Thorne, C. W. Tilforth 1973-5-31 43728 San Bernardino E Mojave Desert, N. slope New York Mountians, 0.5 mile N of Vanderbilt. 1220 Comment
  RSA290808  Eriogonum nidularium Robert F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-9 44887 Inyo Panamint Mts. Near Beehive charcoal kilns 2043 Comment
  RSA233265  Eriogonum nudum var. pauciflorum Robert F. Thorne 1969-7-2 38305 Los Angeles San Gabriel Mountains, Angeles National Forest: Angeles Crest Highway, 3.2 miles WSW of Cloudburst Summit. 1982 Comment
  RSA176251  Eriogonum nudum var. westonii Robert F. Thorne 1963-5-17 31793 Kern Red Rock Canyon. Comment
  RSA290724  Eriogonum nudum var. westonii Robert F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-11 44797 Inyo Death Valley National Monument, Panamint Mts.: Wildrose Canyon c. 1 mi below beehive charcoal kilns. 1982 Comment
  RSA342012  Eriogonum parishii Robert F. Thorne, Walter Wisura 1979-8-24 53623 San Bernardino Holcomb Valley: Along Hwy 18, a couple of miles W of Big Bear Lake, 2073 Comment
  CAS-BOT-BC402169  Eriogonum plumatella R. F. Thorne; C. W. Tilforth; Larry E. DeBuhr; B. Tucker; R. K. Benjamin; et al 1976-10-30 48682 San Bernardino Granite Mountains, eastern Mojave Desert: Sandy bajada along Cottonwood Wash 3-4 miles south of Kelso Dunes. 976 Comment
  RSA278264  Eriogonum plumatella Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-12 49287 San Bernardino Few mi. NW of Goffs in Fenner Valley. 854 Comment
  SD247705  Eriogonum plumatella R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48682 San Bernardino Granite Mountains, eastern Mojave Desert: sandy bajada along Cottonwood Wash 3-4 miles south of Kelso Dunes. 975 Comment
  CAS-BOT-BC258229  Eriogonum pusillum R. F. Thorne; Walter Wisura; Suzanne Granger; Pamela Burton 1982-4-20 54982 Los Angeles San Gabriel Mountains: Mojave Desert slopes; 1/4-1/2 mile north of Bob's Gap, north slope of Holcomb Ridge, about 2.5 miles due south of Llano 1158 Comment
  UC1349028  Eriogonum pusillum Robert F. Thorne 1963-4-12 32459 San Bernardino 9 mi ne Yucca Valley (sw edge Mojave Desert); Mojave Desert 1219 Comment
  RSA233536  Eriogonum pusillum Robert F. Thorne, C. W. Tilforth 1972-6-29 42111 Los Angeles San Gabriel Mountains, Angeles National Forest: c. 2.0 mi SE of Valyermo on road to Jackson Lake 1433 Comment
  RSA636141  Eriogonum pusillum Robert F. Thorne 1974-4-9 44704 Los Angeles Bob's Gap in Holocomb Ridge. 1220 Comment
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Feb 7 2008
  RSA250414  Eriogonum saxatile Robert F. Thorne, Hans Eichler 1968-7-27 37821 San Bernardino San Gabriel Mountains, Angeles National Forest: SW-facing slope just above turn-off to Icehouse Canyon. 1494 Comment
  RSA250558  Eriogonum saxatile Robert F. Thorne, John Dourley 1967-10-3 37274 Los Angeles Mt. Baden Powell; N slope at Vincent Gap; on dry open steep talus slopes. 2287 Comment
  RSA252385  Eriogonum spergulinum var. reddingianum Robert F. Thorne, C. W. Tilforth 1969-9-7 39305 El Dorado Grass Lake, S of Hwy. 89, about 0.5 mile W of Luther Pass 2317 Comment
  RSA275475  Eriogonum thomasii Robert F. Thorne, Larry E. DeBuhr, W. Wisura, B. A. Prigge 1977-6-23 49422 San Bernardino E Mojave Desert, Clark Mountain Range: N side of Clark Mountains, along power line road, c. 2 mi les W of junction with Colosseum Road 1220 Comment
  RSA250412  Eriogonum umbellatum var. minus Robert F. Thorne, Hans Eichler 1968-7-27 37841 San Bernardino San Gabriel Mountains, Angeles National Forest: just E of Baldy summit. 2851 Comment
  RSA634220  Eriogonum umbellatum var. munzii Robert F. Thorne 1969-7-9 38545 San Bernardino San Gabriel Mountains, Angeles National Forest: above Big Pines Ranger Station 2134 Comment
  RSA311216  Eriogonum umbellatum var. versicolor Robert F. Thorne, Walter Wisura, Mark Patterson 1983-7-3 56161 Inyo Panamint Mountains: between Bennett Peak and Telescope Peak in Death Valley National Monument. 2896 Comment
  RSA171078  Eriogonum wrightii var. membranaceum Robert F. Thorne, Percy C. Everett 1963-9-27 33242 San Diego On S slope of Cuyamaca Mountain. Along King Creek. 1372 Comment
  UC1348999  Eriogonum wrightii var. subscaposum Robert F. Thorne 1962-9-25 32343 San Bernardino San Gorgonio Mountain San Bernardino National Forest, San Gorgonio Mountain 3352 Comment
  RSA280979  Eriophorum crinigerum Robert F. Thorne, Mary DeDecker, M. Z. Thorne 1969-7-22 38767 Inyo Sierra Nevada, East Slope, Onion Valley. 2834 Comment
  RSA362023  Eriophyllum confertiflorum R. F. Thorne, C. W. Tilforth 1976-4-16 47615 Santa Barbara Santa Cruz Island. In ravines S of airfield in Central Valley. 152 Comment
  SD124226  Eriophyllum confertiflorum Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52648 Santa Barbara San Miguel Island, west of Ranger Station in north trending canyon. 120 Comment
  RSA167899  Eriophyllum nevinii R. F. Thorne, Percy C. Everett 1964-2-7 33444 Los Angeles Santa Catalina Island. Above road to St. Catherin's Hotel. 8 Comment
  RSA199080  Eriophyllum nevinii R. F. Thorne 1968-4-27 37541 Santa Barbara Santa Barbara Island. Edge of NW-facing rocky sea-bluff N of North Peak 76 Comment
  RSA199116  Eriophyllum nevinii R. F. Thorne 1968-4-27 37518 Santa Barbara Santa Barbara Island. East facing sea-bluff at mouth of Cave Canyon, East side of island. 8 Comment
  RSA191609  Eriophyllum wallacei R. F. Thorne 1963-4-12 32507 San Bernardino About 4 miles ESE of Old Woman Springs, SW edge Mojave Desert. 1067 Comment
  RSA729267  Eriophyllum wallacei R. F. Thorne, M. Z. Thorne 1973-3-30 42687 Riverside Morongo Valley Canyon: Near mouth at junction of roads to Morongo Valley and Desert Hot Springs, Mission Creek. 488 Comment
  UCR196299  Eriophyllum wallacei R. F. Thorne, M. Z. Thorne 1973-3-30 42703 San Bernardino Mojave Desert, southeast end Johnson Valley, c. 20 mi north of Yucca Valley and 12 mi east-southeast of Old Woman Springs 979 Comment
  RSA251397  Erodium botrys Robert F. Thorne 1966-4-17 36083 Los Angeles San Clemente Island, near reservoirs between Boulder & Horton, NE side of island. 488 Comment
  RSA198940  Erodium brachycarpum Robert F. Thorne, E. W. Lathrop, Ora M. Clark, S. Carlquist 1968-4-18 37435 Riverside Santa Rose Plateau: Mesa de Colorado, Rancho California. 671 Comment
  CATA2355  Erodium cicutarium Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52701 Santa Barbara San Miguel Island: Found on uplands of the island 152 Comment
  RSA545384  Eryngium aristulatum var. aristulatum R. F. Thorne, L. DeBuhr 1975-8-15 46814 San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  UCR77704  Eryngium aristulatum var. aristulatum R. F. Thorne, Larry E. DeBuhr 1975-8-15 46814 Lake Coast Range, Boggs Lake, west of Mt. Hanah, c. 7.5 mi SSE of Kelseyville and 3 mi NNW of Glenbrook Resort 856 Comment
  RSA755169  Eryngium spinosepalum R. F. Thorne, P. Everett 1963-6-8 32194 Monterey 0.2 miles above Jolon 366 Comment
  GH379449  Erysimum capitatum R. F. Thorne 1966-4-23 36157 Unknown San Gabriel Mts., San Bernardino Nat'l Forest: ca 2.5 mi. NNE of Wrightwood at boundary of National Forest 1524 Comment
  RSA337815  Erysimum capitatum var. capitatum R. F. Thorne, C. W. Tilforth 1979-7-13 53540 San Bernardino San Bernardino Mts: NE-facing above Caribou Creek in Van Dusen Canyon, ca. 1.6 mi. N of jct with Hwy 38 in Big Bear City; San Bernardino Nat'l Forest. 2180 Comment
  RSA757448  Eschscholzia californica Robert F. Thorne, E. W. Lathrop, S. Beckstrom-Sternberg, B. Martin 1982-05 55227 Riverside SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta 730 Comment
  RSA252292  Eschscholzia californica subsp. mexicana Robert F. Thorne 1973-4-29 43313 San Bernardino 11 air miles SE of Cima, 0.4 miles S from Cedar Canyon Road into Pinto Valley Road. 1494 Comment
  RSA275574  Eschscholzia glyptosperma Robert F. Thorne, Barry A. Prigge, A. Shmida, C. W. Tilforth 1978-5-9 51229 San Bernardino Kelso Dunes: southern edge of Kelso Dunes near Bull Canyon Wash from Granite Mountains. 750 Comment
  RSA308039  Eschscholzia minutiflora Robert F. Thorne, C. W. Tilforth, B. A. Prigge, Christopher Davidson 1979-5-22 52955 San Bernardino South of Santa Fe Railroad near Grapevine Canyon Road ca. 3 air miles SSE of Fifteen Mile Point, near junction of Oreole and Flicker Streets. 1098 Comment
  RSA199145  Eschscholzia ramosa Robert F. Thorne 1968-4-28 37486 Santa Barbara Santa Barbara Island. S-facing slope of high bluff on E side of embayment of Cat Canyon 69 Comment
  SD90477  Eschscholzia ramosa Robert F. Thorne 1973-4-12 42937 Los Angeles San Clemente Island; Pyramid Cove at south end of island near small point between Triton and Thresher. 6 Comment
  UCR227646  Eschscholzia ramosa R. F. Thorne, Percy C. Everett 1965-5-11 34573 Los Angeles Channel Islands; Santa Catalina Island, north side of north cove of Little Harbor 5 Comment
  RSA279722  Eucnide urens Robert F. Thorne, C. W. Tilforth 1974-5-28 44539 San Bernardino East Mojave Desert: 5.3 miles west of State Line (Nevada) along powerline road. 1006 Comment
  RSA187872  Eucrypta chrysanthemifolia Robert F. Thorne 1966-4-7 35964 Los Angeles Santa Catalina Island: Cherry Valley 61 Comment
  RSA362030  Eucrypta chrysanthemifolia Robert F. Thorne, C. W. Tilforth 1976-4-16 47620 Santa Barbara Santa Cruz Island. Central Valley, near small stream in ravine ESE of airstrip 114 Comment
  RSA252008  Eucrypta chrysanthemifolia var. bipinnatifida Robert F. Thorne 1973-4-28 43208 San Bernardino Providence Mountains, canyon below Cornfield Springs, 10.9 road miles SE of Kelso. 1067 Comment
  RSA275520  Eucrypta chrysanthemifolia var. bipinnatifida Robert F. Thorne, C. W. Tilforth, A. Shmida, Barry A. Prigge 1978-5-8 51191 San Bernardino Granite Mountains, lower end of Bull Canyon, NNW side of Granite Mts., S of Kelso Dunes 854 Comment
  LA103793  Eucrypta chrysanthemifolia var. chrysanthemifolia Robert F. Thorne; G. Wallace, M. Haefs 1977-4-28 Santa Barbara Santa Rosa Island. Slopes of Box Canyon 76 Comment
  RSA342258  Eucrypta chrysanthemifolia var. chrysanthemifolia Robert F. Thorne, P. C. Everett 1963-4-19 31527 San Benito 11 miles south of Paicines. 305 Comment
  RSA790449  Euphorbia albomarginata R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48659 San Bernardino Granite Mountains, eastern Mojave Desert: Sandy plateau area ca. 1 mile east of Granite Peak 1860 Comment
  UCR227742  Euphorbia albomarginata R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, Robert K. Benjamin, et al. 1976-10-29 47935 San Bernardino East Mojave Desert, New York Mountains, near mouth of Keystone Canyon 1662 Comment
  UCD142545  Euphorbia albomarginata Robert F. Thorne; C. W. Tilforth 1971-6-17 39969 Los Angeles San Gabriel Mts.; Angeles National Forest: 2 mi. up Lower Tujunga Rd. from Forestry Headquarters. Little Tujunga Creek. 457 Comment
  UCD143096  Euphorbia lurida R. F. Thorne; M. Z. Thorne 1969-7-9 38485 Los Angeles San Gabriel Mountains. Angeles National Forest. Table Mt. above Big Pines Ranger Station. 2118 Comment
  RSA314623  Euphorbia misera R. F. Thorne, Fosberg, Sachet, Herbst 1983-4-23 55410 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  UCD142469  Euphorbia peplus Robert F. Thorne 1970-3-6 39415 Los Angeles Santa Catalina Island; Indian Rock in Emerald Bay. 15 Comment
  SD127594  Euphorbia serpillifolia Robert F. Thorne, Tim Krantz 1982-8-20 55152 San Bernardino San Bernardino National Forest, Lower Holcomb Creek Botanical Area 2190 Comment
  SD69675  Euphorbia serpillifolia Robert F. Thorne, P. Everett 1965-6-23 34964 Los Angeles Santa Catalina Island Number 2 Reservoir upper part of Middle Ranch Canyon 299 Comment
  SD255109  Euthamia occidentalis R. F. Thorne 1977-11-21 49982 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp. Comment
  RSA251973  Fallugia paradoxa Robert F. Thorne, C. W. Tilforth 1973-5-30 43606 San Bernardino New York Mountains: Upper portion of Caruthers Canyon 1677 Comment
  RSA0037396  Festuca Robert F. Thorne, C. W. Tilforth 1971-5-24 39562 Fresno Foothills of Sierra Nevada; ca. 2 miles beyond turn-off to Maxon Road 442 Comment
  SBBG31201  Festuca arundinacea R. F. Thorne 1966-6-1 36488 Los Angeles former lawn of razed St. Catherine's Hotel N of Avalon 4 Comment
  RSA283101  Festuca brachyphylla R. F. Thorne, Davidson, Walter Wisura, Krantz, Lois Goodman 1977-7-20 49876 San Bernardino San Bernardino Mountains, San Gorgonio Wilderness: San Gorgonio Mt., E of summit along Summit Ridge Trail 3384 Comment
  RSA275529  Filago californica R. F. Thorne, C. W. Tilforth, A. Shmida 1978-5-9 51283 San Bernardino Granite Mountains; Coyote Springs (NE corner of range). 976 Comment
  RSA632846  Filago californica R. F. Thorne, J. Benny, John Dourley 1971-6-23 40998 San Bernardino San Gabriel Mountains: San Bernardino National Forest, mouth of Day Canyon. 853 Comment
  RSA797822  Filago gallica R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49811 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA639248  Filago gallica R. F. Thorne, M. Z. Thorne 1971-4-25 41341 Los Angeles San Gabriel Mountains: Johnson's Pasture north of Claremont. 609 Comment
  RSA729276  Filago gallica R. F. Thorne, C. W. Tilforth 1971-5-24 39627 Madera 2.3 miles N of North Fork. 884 Comment
  SD90293  Forestiera neomexicana Robert F. Thorne, J. P. Simon, et al. 1970-5-1 39542 Los Angeles Along lower Big Rock Creek, ca. 1.0 mile south of Valyermo Station. 1250 Comment
  SD90327  Forestiera neomexicana Robert F. Thorne 1973-4-29 43324 San Bernardino 7.5 air miles east of Cima near Bathtub Springs, west of Pinto Valley. 1798 Comment
  HSC82806  Frangula californica R. F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61209 San Diego Upper Cottonwood Canyon 534 Comment
  RSA798541  Frangula californica subsp. cuspidata Robert F. Thorne, E. W. Lathrop 1977-5-18 49740 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  CAS-BOT-BC218367  Frasera albomarginata Robert F. Thorne; L. DeBuhr; W. Wisura; B. Prigge 1977-6-24 49466 San Bernardino Ridge of dolomitized limestone just S of Frank Curtis' mine (Juniper Claims, Clark Mtn. Range, E. Mojave Desert 1767 Comment
  CAS-BOT-BC217359  Frasera neglecta Robert F. Thorne 1969-7-2 38256 Los Angeles Upper Chilao Campground, Angeles National Foerst, San Gabriel Mountains 1615 Comment
  RSA230750  Frasera neglecta Robert F. Thorne 1969-7-9 38482 Los Angeles Angeles National Forest: Table Mt. above Big Pines Ranger Station. 2119 Comment
  GH401135  Fraxinus dipetala R. F. Thorne & S. T. Blake 1965-6-4 34792 Unknown Sequoia National Forest: Above King's River along Hwy. 180 1493 Comment
  RSA0042150  Fraxinus dipetala Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49687 Orange Northern Santa Ana Mountains: Sierra Peak. [locality information from field label; note on newspaper 'N slope Pleasant's Pk, 1.5 mi. S Beek's Place]. 900 Comment
  RSA226118  Fraxinus dipetala Robert F. Thorne, C. W. Tilforth 1971-6-17 s.n. Los Angeles 7 miles up Little Tujunga Canyon Road from Little Tujunga station. San Gabriel Mountains, Angeles National Forest 671 Comment
  RSA249558  Fraxinus dipetala Robert F. Thorne, S. T. Blake 1965-6-4 34792 Fresno Sequoia National Forest. Above King s River along Hwy. 180. 1494 Comment
  RSA246860  Fraxinus latifolia Robert F. Thorne, Percy C. Everett 1965-8-3 35078 Mendocino Wilderness Lodge, Nature Conservancy 457 Comment
  CAS-BOT-BC212383  Fremontodendron californicum Robert F. Thorne; Carlos Munoz 1969-6-17 38016 Los Angeles Lower end of Icehouse Canyon, San Gabriel Mts., Angeles National Forest 1524 Comment
  RSA177962  Fritillaria recurva Robert F. Thorne 1965-4-20 34381 Sonoma Charles Newmans place up Los Alamos Rd, on Rincon Ridge 396 Comment
  RSA769068  Galium andrewsii Robert F. Thorne, Percy C. Everett 1963-6-7 32154 San Luis Obispo Along Cuesta Ridge road, 1.8 miles NW from Cuesta Pass Freeway. 549 Comment
  RSA229725  Galium angustifolium subsp. angustifolium Robert F. Thorne 1969-7-2 38214 Los Angeles San Gabriel Mountains, Angeles National Forest: Charlton Flats burn (of 1954) 1616 Comment
  UC1518736  Galium angustifolium subsp. angustifolium R. F. Thorne, Walter Wisura, and John Dourley 1982-6-18 55047 San Bernardino burned-over area (fire of 1979) along Cushenberry Grade; San Bernardino National Forest 1828 Comment
  UC1348982  Galium angustifolium subsp. gabrielense Robert F. Thorne, M. Z. Thorne 1967-7-19 37168 Los Angeles above Crystal Lake Recreation Area; San Gabriel Mts., Angeles National Forest, Big Cienega Sprin 1981 Comment
  UC1511312  Galium angustifolium subsp. gracillimum Robert F. Thorne, B. Prigge, D. Michener, S. Meyer, and W. Wisura 1978-5-25 51690 San Bernardino Lower Gilroy Canyon Providence Mountains 1371 Comment
  RSA191164  Galium angustifolium subsp. nudicaule Robert F. Thorne, M. Z. Thorne 1967-7-19 37168 Los Angeles Angeles National Forest: Big Cienega Springs above Crystal Lake Recreation Area. 1982 Comment
  UC1375352  Galium angustifolium subsp. nudicaule Robert F. Thorne and C. W. Tilforth 1971-6-30 40803 Los Angeles dessicated branch of S Fork of Little Rock Creek 1.8 mi below Alder Saddle; San Gabriel Mts., Angeles National Forest, Pinyon Flats Area 1554 Comment
  RSA199092  Galium aparine Robert F. Thorne 1968-4-27 37522 Santa Barbara Santa Barbara Island. Lower part of Cave Canyon. 15 Comment
  RSA286991  Galium aparine Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-30 48770 Santa Barbara Santa Rosa Island. Canada Lobos. 61 Comment
  RSA287785  Galium aparine Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-28 48798 Santa Barbara Santa Rosa Island. Box Canyon. SW of SE Anchorage 76 Comment
  RSA191186  Galium aparine Robert F. Thorne, M. Z. Thorne 1967-7-19 37176 Los Angeles San Gabriel Mountains, Angeles National Forest: Big Cienega Springs, above Crystal Lake Recreation Area. 1982 Comment
  RSA251466  Galium aparine Robert F. Thorne 1973-4-11 42811 Los Angeles San Clemente Island, upper part of Middle Ranch Canyon. 381 Comment
  RSA286779  Galium bifolium Robert F. Thorne, Larry E. DeBuhr 1974-6-28 44745 Los Angeles Angeles National Forest: Lily Springs area on N slope of Mt. Hawkins, drainage of S Fork Big rock Creek. 2439 Comment
  RSA248835  Galium catalinense subsp. acrispum Robert F. Thorne 1973-4-11 42842 Los Angeles San Clemente Island, wet bottom of Norton Canyon. 274 Comment
  RSA290756  Galium hilendiae subsp. carneum Robert F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-10 44822 Inyo Death Valley National Monument, Panamint Mountains. East slope of Rogers Peak along trail from Mahogany flats to Telescope Peak, 2591 Comment
  RSA278736  Galium munzii Robert F. Thorne, Walter Wisura 1978-5-26 51576 San Bernardino Mojave Desert, Granite Mountains: Upper Bull Canyon. 1646 Comment
  UC1511328  Galium munzii Robert F. Thorne, B. Prigge, D. Michener, S. Meyer, and W. Wisura 1978-5-25 51740 San Bernardino Middle Gilroy Canyon Providence Mountains 1371 Comment
  UC1532902  Galium nuttallii subsp. insulare Robert F. Thorne, C. W. Tilforth, et al. 1976-4-13 47453 Santa Barbara ca 1/2 mi w laboratory (s-facing slope of low ridge); Santa Cruz Island, Central Valley 213 Comment
  RSA252069  Galium parishii Robert F. Thorne, C. W. Tilforth 1973-6-21 44093 San Bernardino New York Mountains: W branch of Fourth of July Canyon. 1768 Comment
  UCR40187  Galium parishii R. F. Thorne, R. D. Stone, S. Castagnoli, Greg de Nevers 1980-9-21 54794 San Bernardino NE Mojave Desert, Kingston Mtns; slope of Kingston Peak 2180 Comment
  SEINET12320628  Galium parishii R. F. Thorne, Wisura, W. 1978-1 51577 San Bernardino Mojave Desert, Granite Mts., upper Bull Canyon 1646 Comment
  RSA555194  Galium porrigens Robert F. Thorne, Larry E. DeBuhr 1975-8-15 46832 Lake Near Boggs Lake. Along Glass Bottle Rd. Ca 6 miles SSE of Kelseyville on dry roadside bank with much obsidian. 869 Comment
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May 16 2013
  RSA275535  Galium stellatum Robert F. Thorne, C. W. Tilforth, A. Shmida 1978-5-9 51273 San Bernardino E. Mojave Desert; Granite Mountains: Coyote Springs (NE corner of range). 1006 Comment
  SEINET12558166  Galium stellatum K. Thorne, D. Atwood 1986-4-15 4381 Inyo Between Nopah & Kingston Ranges; E side Pahrump Valley; Tecopa Road Ca; 2 miles N on fence lined road to Box Canyon & Sandy Wash 900 Comment
  CHSC23217  Galium stellatum subsp. eremicum Rober F. Thorne; C. W. Tilforth 1973-6-1 43825 San Bernardino E. Mojave Desert, Kingston Mts.: c. 1/2 mi E of Horse-thief Springs. 1371 Comment
  UC1478811  Galium stellatum var. eremicum Robert F. Thorne, C. W. Tilforth, Avi Shmida, et al. 1978-5-9 51273 San Bernardino Coyote Springs E. Mojave Desert, Granite Mts. (ne corner of range) 1005 Comment
  RSA284076  Gamochaeta ustulata R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-30 48774 b Santa Barbara Santa Rosa Island. Canada Lobos, streamside 38 Comment
  RSA230186  Garrya flavescens Robert F. Thorne 1969-7-2 38343 a Los Angeles San Gabriel Mountains, Angeles National Forest: slope above Vincent Gap on Angeles Crest Highway 2012 Comment
  SEINET12137320  Garrya flavescens subsp. flavescens R. F. Thorne, Wisura, W. 1978-1 51592 San Bernardino Mojave Desert, Granite Mts., upper Bull Canyon 1615 Comment
  GH401793  Garrya flavescens subsp. pallida R. F. Thorne & C. W. Tilforth 1973-6-19 43973 Unknown E. Mojave Desert, Providence Mts.: N end of mts. c. 7 mi NE of Kelso (by road), upper Globe Canyon near Globe Mine 1463 Comment
  GH401979  Garrya veatchii R. F. Thorne, J. P. Simon, J. Dourley & H. W. Caulfield 1970-5-1 39545 Unknown Along Big Rock Creek, below Sycamore Flat Camp, ca. 2.5 mi. S of Valyermo Station 1280 Comment
  RSA275734  Gaura coccinea Robert F. Thorne 1977-5-26 49153 San Bernardino E. Mojave Desert, Clark Mountain Range. along power line road, N side of Clarks. 1220 Comment
  RSA791715  Gayophytum Robert F. Thorne, Leila Shultz, Tim Krantz 1980-10-3 54869 San Bernardino San Bernardino National Forest, along lower Holcomb Creek where crossed by the road N from Fawnskin, N of Delamar Mountain, W of Hitchcock Ranch. 2195 Comment
  RSA798855  Gayophytum Robert F. Thorne, Walter Wisura, Dave Michener, Jim R. Shevock 1979-9-4 53713 Tulare Balch Park. 1898 Comment
  SD251255  Gayophytum Robert F. Thorne, Chris Davidson 1978-6-18 52246 San Bernardino Baldwin Lake: Alkaline meadow at the north end of Baldwin Lake, south of Highway 18. 2042 Comment
  RSA225736  Gayophytum decipiens Robert F. Thorne, M. Z. Thorne, Christopher Davidson 1971-6-12 39851 San Bernardino San Gabriel Mts., Angeles National Forest: Mt. San Antonio, Devil's Backbone 2744 Comment
  RSA280126  Gayophytum decipiens Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38798 Inyo Sierra Nevada, E Slope, Onion Valley: base of dry slope above Independence Creek 2790 Comment
  RSA387749  Gayophytum diffusum subsp. parviflorum Robert F. Thorne, Larry E. DeBuhr, C. Davidson, C. W. Tilforth 1976-7-15 47863 San Bernardino San Bernardino Mountains: E of Bluff Lake.ca. 1.5 mile due S of W end of Big Bear Lake. 2317 Comment
  RSA229169  Gayophytum heterozygum Robert F. Thorne, C. W. Tilforth 1971-6-29 40709 Los Angeles SAN GABRIEL MTS., ANGELES NATIONAL FOREST: along Aliso Creek at Tie Canyon where crossed by Angeles Forest Rd. 1372 Comment
  RSA228890  Gayophytum heterozygum Robert F. Thorne 1971-6-26 39987 -b Los Angeles Angeles National Forest. Near Chilao Old Camp. 1616 Comment
  RSA246869  Gentiana sceptrum Robert F. Thorne, P. C. Everett 1965-8-9 35288 Humboldt Big Lagoon. 3 Comment
  RSA171037  Geraea canescens R. F. Thorne 1963-3-29 32390 Riverside Ca. 7-8 miles E of Mecca, Mecca Hills. 152 Comment
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Dec 13 2011
  RSA336136  Geraea canescens R. F. Thorne 1978-4-29 52088 Imperial Near Salton Sea: along Hwy 86 near entrance to Salton Sea Naval Base, SSE of Salton Sea -61 Comment
  RSA334319  Geranium richardsonii Robert F. Thorne, C. W. Tilforth 1980-8-12 54663 San Bernardino San Bernardino National Forest: South Fork Meadows of the Santa Ana River and adjacent Pinus jefferyi and Abies concolor forest; San Gorgonio Wilderness area 2256 Comment
  UC1532804  Geranium richardsonii Robert F. Thorne and L. DeBuhr 1975-8-23 47249 El Dorado Grass Lake; just N of Luther Pass Comment
  RSA187829  Gilia angelensis R. F. Thorne 1966-4-7 35938 Los Angeles Santa Catalina Island: Cherry Valley 61 Comment
  RSA749182  Gilia brecciarum subsp. brecciarum R. F. Thorne 1979-5-10 52925 -a San Bernardino 0.5 mile NE of Rock Springs in Arrastre Canyon about 4.5 air miles S of Deadman Point 1128 Comment
  RSA800200  Gilia cana subsp. bernardina R. F. Thorne, C. W. Tilforth, B. A. Prigge, Christopher Davidson 1979-5-22 53024 San Bernardino Near relay station on Grapevine Canyon Road about 4 air-miles S of Fifteenmile Pt. San Bernardino Mountains. 1524 Comment
  RSA167750  Gilia cana subsp. speciformis R. F. Thorne, P. C. Everett 1964-4-18 33818 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass 915 Comment
  RSA191137  Gilia capitata subsp. abrotanifolia R. F. Thorne, M. Z. Thorne 1967-6-25 37105 Los Angeles Evey Canyon 883 Comment
  RSA641654  Gilia clokeyi R. F. Thorne 1974-5-2 45328 San Bernardino Providence Mountains: East slope; Clipper Valley at junction of Black Canyon and Essex Roads. 914 Comment
  RSA247972  Gilia latiflora subsp. davyi R. F. Thorne, Gary D. Wallace 1973-4-24 43451 Los Angeles Antelope Valley, Western Mojave Desert: Lovejoy Buttes, N of Llano, S slope. 915 Comment
  RSA0022486  Gilia latifolia R. F. Thorne, Carol Annable, R. K. Benjamin, Bonnie Busenburg, Mary DeDecker, Paul DeDecker, Wesley Niles, Paul Peterson 1983-5-9 55631 Inyo Death Valley Nat'l Monument, Funeral Mountains, campsite at lower end of Red Amphitheatre above Hole in the Wall, just E of park boundary. 768 Comment
  RSA246814  Gilia millefoliata R. F. Thorne 1965-9-20 355564 Del Norte NW of Lake Talawa. 6 Comment
  RSA0016248  Gilia ochroleuca subsp. bizonata R. F. Thorne 1973-5-11 43561 Los Angeles Along Mt. Emma Road: 1.9 mi W of Little Rock Creek below the dam. 1159 Comment
  RSA0017058  Gilia ochroleuca subsp. bizonata R. F. Thorne, Barry Prigge 1979-5-10 52860 San Bernardino San Bernardino Mountians: Near junction of Grass Valley Creek and Mojave River. 976 Comment
  CAS-BOT-BC407612  Gilia ochroleuca subsp. exilis Robert F. Thorne; F. R. Fosberg; M. Sachetti 1983-4-23 55471 Riverside San Bernardino Mts: Side-canyon on W side of Whitewater canyon, ca 3.3 mi N of Whitewater Post Office 624 Comment
  UCR227760  Gilia ochroleuca subsp. vivida R. F. Thorne, C. W. Tilforth 1972-6-29 42089 San Bernardino Transverse Ranges; San Gabriel Mountains, Angeles National Forest, summit of Table Mountain above Big Pines 2287 Comment
  RSA0017187  Gilia ochroleuca subsp. vivida R. F. Thorne 1971-6-26 39994 Los Angeles Angeles National Forest. Near Chilao Old Camp. 1616 Comment
  RSA275938  Gilia ophthalmoides R. F. Thorne, Walter Wisura, Christopher Davidson, B. A. Prigge 1977-5-26 49174 San Bernardino Clark Mountain Range; along trail to Fir Canyon near its mouth. 1585 Comment
  RSA749184  Gilia scopulorum R. F. Thorne, W. Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55542 Inyo Funeral Mountains: at mouth of Mortonia Canyon, upper end of Red Amphitheatre, up canyon perhaps 1.5 mi. 1073 Comment
  RSA334169  Gilia stellata R. F. Thorne, Tilforth, Avi Shmida, et al. 1978-5-10 51374 San Bernardino Mesquite Mountains, Winter's Pass 1098 Comment
  UCD117903  Gilia stellata Robert F. Thorne 1963-3-29 32415 Riverside 9 miles east of Mecca, Mecca Hills. 152 Comment
  RSA349851  Gilia transmontana R. F. Thorne 1975-5-3 45408 San Bernardino SE of Kelso Dunes: 7 mi. S of Kelso on Kelbaker Road, and 8 mi. N of Granite Pass. 762 Comment
  SD90484  Glossopetalon spinescens var. aridum Robert F. Thorne, C. W. Tilforth 1973-5-31 43694 San Bernardino E. Mojave Desert, New York Mts, Caruthers Canyon; in the upper end of Caruthers Canyon near Hard Cash Mine 1890 Comment
  RSA210774  Glyceria borealis R. F. Thorne, J. Henrickson, C. W. Tilforth 1969-9-4 39097 Modoc N Fork of Pit River 3.4 mi N of Alturas where crossed by Highway 395. 1341 Comment
  RSA239263  Glyceria borealis R. F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42329 Plumas Butterfly Valley Botanic Area: Partly in Plumas National Forest. 1159 Comment
  RSA584813  Gnaphalium californicum R. F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61191 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along Cole Canyon. 535 Comment
  RSA303781  Gnaphalium chilense R. F. Thorne, C. W. Tilforth 1979-4-3 52373 Ventura San Nicolas Island: Sand spit and Salina at extreme E end of island. 30 Comment
  RSA187677  Gnaphalium luteoalbum R. F. Thorne 1966-9-14 36647 Los Angeles Santa Catalina Island: sandy, disturbed area behind Ben Weston Beach 3 Comment
  RSA286891  Gnaphalium luteoalbum R. F. Thorne, John Dourley, Walter Wisura 1977-4-28 48827 Santa Barbara Santa Rosa Island. Box Canyon. SW of SE Anchorage 76 Comment
  GH395264  Gnaphalium microcephalum R. F. Thorne, E. W. Lathrop & G. Marshs 1977-5-4 49791 Unknown Santa Ana Mountains: Trabuco Canyon Comment
  RSA316188  Gnaphalium palustre R. F. Thorne, Walter Wisura, John Dourley 1982-6-18 55028 San Bernardino San Bernardino National Forest: west end of Baldwin Lake, just east of Pan Hot Springs 2050 Comment
  RSA332440  Gnaphalium palustre R. F. Thorne 1984-5-4 58361 Santa Barbara Santa Cruz Island. Behind Prisoners' Harbor Camp. Comment
  RSA755014  Gnaphalium palustre R. F. Thorne 1995-4-25 62961 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area. 1067 Comment
  SD117452  Gnaphalium palustre Robert F. Thorne 1974-7-31 44955 Lake Boggs Lake; north of Harrington Flat Road. 915 Comment
  RSA167531  Gratiola ebracteata Robert F. Thorne 1964-4-16 33753 Calaveras 2 miles N of Valley Springs. 366 Comment
  RSA210886  Gratiola neglecta Robert F. Thorne, James Henrickson, C. W. Tilforth 1969-9-4 39100 Modoc On muddy spit and shore of N Fork of Pit River 3.4 mi. N of Alturas where crossed by Highway 395. 1341 Comment
  RSA278720  Grayia spinosa R. F. Thorne 1978-5-26 51553 San Bernardino Granite Mountains, Cottonwood Basin. 1402 Comment
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Aug 15 2007
  RSA284059  Grindelia camporum var. bracteosa R. F. Thorne 1977-4-28 48914 Santa Barbara Santa Rosa Island. E end between Skunk and East Points, lower end of Old Ranch Canyon. 8 Comment
  RSA246647  Grindelia stricta var. platyphylla R. F. Thorne 1965-9-20 35570 Del Norte W of Lake Talawa. 3 Comment
  RSA284075  Guillenia lasiophylla R. F. Thorne 1977-4-30 48761 Santa Barbara Santa Rosa Island: Canada Lobos 23 Comment
  RSA284485  Gutierrezia sarothrae R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1976-10-29 48620 San Bernardino New York Mountains; Cottonwood Canyon. 1677 Comment
  RSA339062  Gutierrezia sarothrae R. F. Thorne, T. P. Krantz 1982-8-20 55162 San Bernardino San Bernardino National Forest: Lower Holcomb Creek Botanical Area, near creek where crossed by road N from Fawnskin, N of Delamar Mt., W of Hitchcock Ranch 2195 Comment
  RSA252044  Hedeoma nana subsp. californica Robert F. Thorne 1973-4-28 43171 San Bernardino E. Mojave Desert, Providence Mts.: 4.5 mi. SE of Kelso near mouth of Cornfield Spring Canyon. 930 Comment
  RSA229142  Helenium bigelovii R. F. Thorne, C. W. Tilforth, John Dourley 1969-7-29 38846 Los Angeles N facing slope above Angeles Crest Hwy N & below Lily Spring at headwater of S fork Big Rock Creek 2317 Comment
  RSA188268  Helianthemum scoparium var. vulgare R. F. Thorne 1966-4-29 36324 Los Angeles Santa Catalina Island: below road to White's Landing above turn-off to Echo Lake. 411 Comment
  RSA33610  Helianthus niveus subsp. tephrodes R. F. Thorne, R. Rutherford 1964-4-11 33610 Imperial A few miles W of Glamis. 122 Comment
  RSA636146  Heliomeris multiflora var. nevadensis R. F. Thorne 1974-7-9 44878 Inyo Panamint Moutains: Death Valley National Monument. Mahogany Flat Campground. 2480 Comment
  SEINET3083858 Image available Heliotropium convolvulaceum Robert F. Thorne, B. Prigge, D. Michener, et al. 1979-10-19 53848 San Bernardino Kelso Dunes: N of and along power line road (E of Bull Cyn. Wash), ca. 5 mi. W of Kelbaker Rd; low to high dunes. 732 Comment
  HSC78668  Heliotropium convolvulaceum var. californicum R. F. Thorne, B. A. Prigge, David Michener, et al. 1979-10-19 53848 San Bernardino Kelso Dunes, N of and along power line road (E of Bull Canyon wash), ca. 5 mi. W of Kelbaker Rd. 732 Comment
  RSA388419  Heliotropium curassavicum var. oculatum R. F. Thorne 1985-7-18 61193 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along Cole Canyon. 535 Comment
  RSA199089  Hemizonia clementina R. F. Thorne 1968-4-27 37544 Santa Barbara Santa Barbara Island. 76 Comment
  RSA248829  Hemizonia clementina R. F. Thorne 1973-4-12 42888 Los Angeles San Clemente Island, plateau near Cutlass above old dam. 198 Comment
  RSA177886  Hemizonia fasciculata R. F. Thorne, P. Everett 1965-5-11 34529 Los Angeles Santa Catalina Island: E side of Catalina Harbor 46 Comment
  RSA729275  Hemizonia pungens subsp. pungens R. F. Thorne, C. W. Tilforth 1971-5-24 39613 Fresno Ca. 6 miles below Pine Flat Road junction, near headgate of Fresno Irrigation System along Kings River. 122 Comment
  RSA172335  Heracleum maximum R. F. Thorne, J. Henrickson 1963-8-9 32999 Mono Toiyabe National Forest, 9 miles W of Sonora Junction, along Leavitt Creek. 2713 Comment
  RSA275890  Hesperocallis undulata Robert F. Thorne, C. W. Tilforth, B. A. Prigge, et al. 1978-5-9 51202 San Bernardino Kelso Dunes: southern edge of Kelso Dunes near Bull Canyon Wash from Granite Mountains 731 Comment
  SBBG31445  Hesperocnide tenella R. F. Thorne 1966-4-5 Los Angeles Cape Cyn Comment
  SEINET10460649  Heterocodon rariflorum Thorne 1969-7-2 THORNE 38224 Los Angeles SAN GABRIEL MTS. CHARLTON FLATS BURN OF 1954 5250' CHAPARRAL Comment
  RSA0075876  Heterotheca grandiflora R. F. Thorne 1976-4-12 47420 Santa Barbara Santa Cruz Island. Central Valley, arroyo N of Biological Station. 69 Comment
  RSA0075914  Heterotheca grandiflora R. F. Thorne, C. W. Tilforth 1979-4-3 52409 Ventura San Nicolas Island: Lower end of Tule Creek and dunes toward coast; N side of island, ESE of Thousand Springs. 30 Comment
  SD69787  Heterotheca grandiflora Robert F. Thorne 1966-4-5 35801 Los Angeles Santa Catalina Island, along paved road on north slope of Black jack Mountain 1349 Comment
  CATA2567  Heuchera maxima Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-29 48987 Santa Barbara Santa Rosa Island: In one of the headwater canyons of upper Windmill Creek 0 Comment
  UCR35831  Heuchera rubescens R. F. Thorne, W. Wisura, M. Patterson 1983-7-3 56145 Inyo Northern Mojave Desert, Panamint Mountains: Hike from top of Rogers Peak, Ssouth up to Eagle Spring, then on to Telescope Peak, Death Valley National Monument 3369 Comment
  POM334490  Hieracium albiflorum R. F. Thorne, C. W. Tilforth 1980-8-12 54693 San Bernardino San Bernardino National Forest: S Fork Meadows of the Santa Ana River and adjacent Pinus jeffreyiabies concolor forest, San gorgornio Wildrness 2348 Comment
  RSA341275  Hieracium albiflorum R. F. Thorne, Walter Wisura, D. C. Michener, Jim Shevock 1979-9-4 53761 Tulare Moses Mountain. 2012 Comment
  RSA188566  Hieracium horridum R. F. Thorne 1965-8-30 35451 San Bernardino Angeles National Forest: rocky summit of Ontario Peak; San Gabriel Mts. 2650 Comment
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Feb 5 2010
  RSA0016039  Hippuris vulgaris Robert F. Thorne, Larry E. DeBuhr 1975-8-23 47222 El Dorado Grass Lake, just north of Luther Pass. 2348 Comment
  RSA233572  Hoita orbicularis R. F. Thorne 1972-6-29 42123 San Bernardino San Gabriel Mts., San Bernardino National Forest: San Sevaine Cow Camp. 1448 Comment
  UC1951318  Holodiscus discolor Robert F. Thorne and Fred Oettinger 1969-8-4 63384 Siskiyou Klamath National Forest, Salmon Mountains, Marble Mountain Wilderness Area, high lake basins in the vicinity of English Peak. Near crest of ridge above English Lake, along trail to Hancock Lake. Comment
  CAS-BOT-BC149951  Holodiscus discolor var. discolor Robert F. Thorne 1967-5-20 36905 Los Angeles Santa Catalina Island: In Descanso Canyon ca. 1/4 way down from head at Airport Rd. to mouth 228 Comment
  RSA172300  Holodiscus microphyllus Robert F. Thorne 1962-9-25 32350 San Bernardino San Gorgonio Mountain, San Bernardino National Forest 2744 Comment
  RSA280105  Holodiscus microphyllus Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38796 Inyo Onion Valley 2896 Comment
  RSA334386  Holodiscus microphyllus Robert F. Thorne, R. D. Stone, S. Castagnoli, Greg de Nevers 1980-9-21 54800 San Bernardino Kingston Mtns: North-facing slope of Kingston Peak 2180 Comment
  CAS-BOT-BC147735  Holodiscus microphyllus var. microphyllus Robert F. Thorne; C. W. Tilforth; John Dourley 1969-7-29 38908 Los Angeles San Gabriel Mts., Angeles National Forest: Canyon above Angeles Crest Hwy. c. 1 mi. W of Vincent Gap, at one of headwaters of E fork Big Rock Creek N face Mt. Baden-Powell 2331 Comment
  CAS-BOT-BC152733  Holodiscus microphyllus var. microphyllus R. F. Thorne; Hj. Eichler 1968-7-27 37826 San Bernardino Near E. end of Devil's Backbone, San Gabriel Mts., Angeles National Forest 2621 Comment
  CAS-BOT-BC289493  Hordeum brachyantherum subsp. californicum Robert F. Thorne 1969-7-2 38315 Los Angeles SE of Angeles Crest Hwy. 3.2 miles WSW of Cloudburst Summit, San Gabriel Mts., Angeles National Forest 1950 Comment
  RSA642339  Hordeum brachyantherum subsp. californicum R. F. Thorne, C. W. Tilforth, B. Givens 1979-4-30 52665 Santa Barbara San Miguel Island. Above and west of Ranger station in north-trending canyon. 122 Comment
  SBBG31048  Hordeum depressum R. F. Thorne with P. C. Everett 1965-5-11 Los Angeles behind N beach at Little Harbor 1 Comment
  RSA251484  Hordeum intercedens R. F. Thorne 1973-4-11 42792 Los Angeles San Clemente Island: plateau in Middle Ranch area at head of Middle Ranch Canyon. 427 Comment
  SD69755  Hordeum intercedens Robert F. Thorne 1968-4-28 37488 Santa Barbara Santa Barbara Island; grassy plateau between headwaters of Middle and Graveyard Canyons. 91 Comment
  RSA551080  Hordeum marinum R. F. Thorne, M. Z. Thorne, Walter Wisura 1978-5-21 51993 Riverside Santa Rosa Plateau: Mesa de Colorado 610 Comment
  RSA198983  Hordeum marinum subsp. gussoneanum R. F. Thorne, P. A. Munz, E. Lathrop 1968-5-8 37589 Riverside Below dam at E end of vernal marsh on Mesa de Colorado, Rancho California 671 Comment
  RSA177768  Hordeum murinum subsp. glaucum R. F. Thorne, P. Everett 1965-5-10 34456 Los Angeles Near Echo Lake, Santa Catalina Island 412 Comment
  RSA334941  Hordeum murinum subsp. glaucum R. F. Thorne, Prigge, Michener, Meyer, Walter Wisura 1978-5-25 51654 San Bernardino Providence Mountains; Bonanza King Mine, Bauer Ranch 1098 Comment
  RSA337406  Hordeum murinum subsp. glaucum R. F. Thorne, Tilforth, Given, et al. 1979-5-1 52736 Santa Barbara San Miguel Island. Near airstrip on west side of island. 122 Comment
  RSA225729  Hordeum murinum subsp. leporinum R. F. Thorne, A. C. Gibson 1971-5-22 39746 Los Angeles Fish Canyon 335 Comment
  RSA307350  Hordeum murinum subsp. leporinum R. F. Thorne, B. Prigge 1979-5-10 52805 San Bernardino Along Crowder Creek 1.5 mi east of Cajon Junction on I-15 976 Comment
  UCD86471  Hordeum murinum subsp. leporinum Robert F. Thorne; Drs. Fosberg, Sachet, and Herbst 1983-4-23 55420 Riverside San Bernardino Mountains. Mouth of Whitewater Canyon, E of Whitewater Post Office at S end of ridge. In sandy wash E of bridge and on base of W-facing slope of ridge. 411 Comment
  RSA187920  Hordeum vulgare R. F. Thorne 1966-4-29 36275 Los Angeles Santa Catalina Island: above ranch in Middle Ranch Canyon 229 Comment
  UC1523531  Horkelia cuneata subsp. cuneata Robert F. Thorne and P. Everett 1965-8-1 35056 Santa Barbara 1.5 mi e Vandenberg Village 30 Comment
  RSA336322  Horkelia rydbergii Robert F. Thorne, Christopher Davidson 1978-6-18 52201 San Bernardino Cushenbury Canyon: Along Chicopee Creek below Whiskey Springs. 1616 Comment
  RSA342504  Horkelia rydbergii Robert F. Thorne 1969-7-2 38217 Los Angeles San Gabrial Mountains, Angeles National Forest: Charlton Flats burn (of 1954), 1601 Comment
  RSA334498  Horkelia wilderae Robert F. Thorne, R. K. Benjamin, T Krantz 1980-9-9 54755 San Bernardino San Bernardino National Forest: Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area. 2378 Comment
  SD82946  Hosackia crassifolia var. crassifolia Robert F. Thorne, M. Z. Thorne 1969-7-9 38567 Los Angeles San Gabriel Mountains, Angeles National Forest, under pine forest at lower margin of big sloping meadow at Big Pines 2073 Comment
  RSA225673  Hulsea vestita subsp. gabrielensis R. F. Thorne, Tilforth, Dourley 1971-6-12 39849 San Bernardino San Gabriel Mts., Angeles National Forest: Mt. San Antonio, Devil's Backbone 2743 Comment
  RSA225810  Hulsea vestita subsp. gabrielensis R. F. Thorne, Tilforth, Dourley 1971-7-27 41085 Los Angeles Angeles National Forest: Devil's Backbone, Mt. San Antonio 2743 Comment
  RSA334618  Hulsea vestita subsp. parryi R. F. Thorne 1978-5-5 51858 San Bernardino Cushenbury Canyon: San Bernardino Mountains 1450 Comment
  RSA283117  Hulsea vestita subsp. pygmaea R. F. Thorne, Davidson, Walter Wisura, Lois Goodman, Krantz 1977-7-20 49862 San Bernardino San Gorgonio Wilderness: San Gorgonio Mt. near junction of Sky High and Summit Ridge Trails 3415 Comment
  RSA171162  Hydrophyllum occidentale Robert F. Thorne, James Henrickson 1963-8-10 33199 Tuolumne Stanislaus National Forest, 0.9 mile W of Sonora Pass. 2866 Comment
  RSA167672  Hymenoclea salsola R. F. Thorne 1964-4-11 33602 Imperial Gables Wash, ca 3 miles W of Imperial Gables, Chocolate Mts. 396 Comment
  RSA249742  Hymenoclea salsola var. salsola R. F. Thorne 1973-5-11 43494 Los Angeles 1/4-1/2 mi N of Bob's Gap, N slope of Holcomb ridge, c. 2 1/2 mi due S of Llano 1159 Comment
  UC1478602  Hymenopappus filifolius var. eriopodus Robert F. Thorne, L. DeBuhr, W. Wisura, and B. Prigge 1977-6-24 49469 San Bernardino ridge just s Frank Curtis' Mine (Juniper Claims); E. Mojave Desert, Clark Mtn. Range 1767 Comment
  RSA381234  Hypericum formosum var. scouleri R. F. Thorne, Larry E. DeBuhr, C. Davidson, C. W. Tilforth, K. Thorne 1976-7-14 47885 San Bernardino San Bernardino National Forest. ca. 2 miles along Mill Creek Road and 2N10 from Coldbrook Campground 2226 Comment
  RSA356893  Hyptis emoryi Robert F. Thorne 1966-10-15 41788 Riverside Palm Springs. Comment
  RSA252060  Ipomopsis arizonica R. F. Thorne, C. W. Tilforth 1973-6-21 44117 San Bernardino New York Mountains: W branch of Fourth of July Canyon. 1768 Comment
  RSA758842  Ipomopsis polycladon R. F. Thorne, W. Wisura, B. Busenburg, R. K. Benjamin 1983-5-9 55713 Inyo Death Valley Nat'l Monument, Funeral Mountains, Keane Wonder Springs. 1189 Comment
  UCR222509  Ipomopsis polycladon R. F. Thorne, W. Wisura, B. Busenberg, R. K. Benjamin 1983-5-9 55713 Inyo Northern Mojave Desert, Death Valley National Monument, Funeral Mountains, Keane Wonder Springs 351 Comment
  RSA337798  Iris missouriensis Robert F. Thorne, C. W. Tilforth, John Little 1979-6-14 53069 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end, on S side, W of Big Bear City 2058 Comment
  RSA252417  Iris missouriensis Robert F. Thorne, C. W. Tilforth 1969-9-7 39278 Mono Along Hot Creek north of Crowley Lake where creek is crossed by Owens River Road 2073 Comment
  RSA583965  Isocoma menziesii var. sedoides R. F. Thorne, C. W. Tilforth 1976-4-15 47590 Santa Barbara Santa Cruz Island. Christy Ranch. 5 Comment
  RSA303783  Isocoma menziesii var. vernonioides R. F. Thorne 1979-4-3 52377 Ventura San Nicolas Island: Sand spit and Salina at extreme E end of island. 30 Comment
  RSA306675  Isocoma menziesii var. vernonioides R. F. Thorne, C. W. Tilforth, B. Given 1979-5-1 52723 Santa Barbara San Miguel Island. Near airstrip on west end of island 122 Comment
  RSA199007  Isoetes howellii R. F. Thorne, E. Lathrop, P. A. Munz 1968-5-8 37567 Riverside Santa Rosa Plateau: on Mesa de Colorado, Rancho California 671 Comment
  SD90574  Isoetes howellii Robert F. Thorne, Earl Lathrop 1969-5-12 37930 Riverside Santa Rosa Plateau, Rancho California, large vernal marsh on south end of Mesa de Colorado 625 Comment
  SEINET3863798 Image available Isoetes howellii Robert F. Thorne, Earl Lathrop 1975-5-20 45542 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro.; 0 610 Comment
  UC1532802  Isoetes howellii Robert F. Thorne and Earl Lathrop 1975-5-20 45542 Riverside Rancho California, Mesa de Burro 609 Comment
  CAS-BOT-BC69865  Isoetes orcuttii Robert F. Thorne; E. Lathrop; P. Munz 1968-5-8 37567 Riverside Santa Rosa Plateau: on Mesa de Colorado, Rancho California. 670 Comment
  CATA2094  Isolepis cernua Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48739 Santa Barbara Santa Rosa Island: Canada Lobos 22 Comment
  RSA279011  Iva axillaris R. F. Thorne, C. W. Tilforth, S. Nilsson 1972-7-20 42188 Los Angeles San Gabriel Mts., Angeles National Forest: Caldwell Lake near Valyermo (sag pond on the San Andreas Fault) 1570 Comment
  UC1523450  Ivesia argyrocoma Robert F. Thorne, C. W. Tilforth and John Little 1979-6-15 53197 San Bernardino flat along Holcomb Creek (below Hitchcock Ranch, where 3N12 crosses the creek); Holcomb Valley 2179 Comment
  RSA280121  Ivesia santolinoides Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38814 Inyo Sierra Nevada, E Slope, Onion Valley: above Independence Creek. 2820 Comment
  UCD51377  Jarava speciosa Robert F. Thorne; Lindsay Smith 1966-5-28 36365 San Bernardino Mojave Desert: just N of the San Gabriel Mts. along Hwy 138, 2 mile WNW of Phelan near Los Angeles County line. 1219 Comment
  SEINET13942196 Image available Juglans californica Robert F. Thorne, P. Everett 1965-1 34674 Los Angeles Chaparral near circle on summit road from Avalon to airport, Santa Catalina Island 91 Comment
  RSA0036706  Juncus Robert F. Thorne, Larry E. DeBuhr 1975-8-15 46816 Lake Boggs Lake: W of Mt. Hannah, ca. 7.5 mi. SSE of Kelseyville and 3 mi. NNW of Glenbrook Resort 854 Comment
  RSA199192  Juncus acutus subsp. leopoldii Robert F. Thorne, D. Propst 1968-5-27 37639 Los Angeles Santa Catalina Island. Ben Weston Beach at mouth of Middle Ranch Canyon. Comment
  UCR200280  Juncus articulatus R. F. Thorne, C. W. Tilforth, et al. 1979-7-12 53402 San Bernardino San Bernardino Mountains, Grass Valley Lake, about 1 mi west of Lake Arrowhead, north end of lake and below dam on stream 1570 Comment
  RSA316209  Juncus balticus subsp. ater Robert F. Thorne, B. A. Prigge, Kay Wright, R. K. Benjamin 1981-6-4 54897 San Bernardino San Bernardino Mountains: below Cedar Springs Dam at headwaters of Mojave River, north slope of San Bernardino Mountains. 915 Comment
  RSA334193  Juncus balticus subsp. ater Robert F. Thorne, Richard K. Benjamin, T. P. Krantz 1980-9-9 54724 San Bernardino San Bernardino National Forest: Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area. 2744 Comment
  RSA246770  Juncus bolanderi Robert F. Thorne, Percy C. Everett 1965-8-7 35176 Humboldt Big Lagoon. 2 Comment
  SEINET3877389  Juncus bolanderi Kaye H. Thorne 1984-11-21 3657 Sonoma Sea Ranch, 2.5 mi S Gualala, stabilized coast dunes old sheep ranch.; 0 Comment
  RSA188306  Juncus bufonius Robert F. Thorne 1966-6-1 36496 Los Angeles Santa Catalina Island: reservoir at upper end of Cape Canyon. 335 Comment
  RSA332462  Juncus bufonius Robert F. Thorne 58363 Santa Barbara Santa Cruz Island. Behind Prisoners Harbor Camp. Comment
  RSA234012  Juncus bufonius var. occidentalis Robert F. Thorne, E. W. Lathrop 1969-5-12 37927 Riverside Santa Rosa Plateau: Mesa de Colorado, Rancho California 625 Comment
  RSA356718  Juncus bufonius var. occidentalis Robert F. Thorne, E. W. Lathrop 1975-5-20 45500 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro 610 Comment
  UC1265370  Juncus bufonius var. occidentalis Robert F. Thorne and Earl Lathrop 1969-5-12 37924 Riverside s end Mesa de Colorado, Rancho Californua; Santa Rosa Plateau 624 Comment
  RSA727494  Juncus ensifolius Robert F. Thorne, C. W. Tilforth, et al. 53449 -b San Bernardino Green Valley Lake, inlet stream. 2111 Comment
  SEINET3879985  Juncus luciensis Robert F. Thorne, Earl Lathrop 1975-5-20 45498 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro.; 0 610 Comment
  RSA386844  Juncus macrandrus Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47848 San Bernardino San Bernardino Mountains: Bluff Lake, ca. 1.5 miles due S of W end of Big Bear Lake 2317 Comment
  RSA287831  Juncus mexicanus Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-29 49020 Santa Barbara Santa Rosa Island. E end between Skunk and East Point 6 Comment
  RSA388410  Juncus mexicanus Robert F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61172 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along Cole Canyon. 535 Comment
  RSA191185  Juncus mexicanus Robert F. Thorne 1967-7-19 37172 Los Angeles San Gabriel Mountains. 1981 Comment
  RSA727492  Juncus occidentalis Robert F. Thorne, C. W. Tilforth 53450 San Bernardino Green Valley Lake, inlet stream. 2111 Comment
  HSC80368  Juncus orthophyllus R. F. Thorne, C. W. Tilforth 1979-7-12 53502 San Bernardino Placer workings just W of Holcomb Valley Campground 2248 Comment
  RSA286228  Juncus oxymeris Robert F. Thorne 1974-7-31 44965 Lake Boggs Lake: N of Harrington Flat Road. 915 Comment
  RSA246808  Juncus phaeocephalus var. phaeocephalus Robert F. Thorne 1965-9-20 35524 Del Norte Near North Fork Road, c. 1 mile E of Gasquet. 122 Comment
  RSA229112  Juncus rugulosus Robert F. Thorne, C. W. Tilforth 1971-6-29 40706 Los Angeles SAN GABRIEL MTS., ANGELES NATIONAL FOREST: along Aliso Creek at Tie Canyon where crossed by Angeles Forest Rd. 1372 Comment
  RSA334364  Juncus saximontanus Robert F. Thorne, L. M. Shultz, T. P. Krantz 1980-10-3 54818 San Bernardino San Bernardino National Forest; Burnt Flat. Comment
  RSA340130  Juncus tiehmii Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53229 San Bernardino East of Holcomb Valley; Arrastre Flat. 2284 Comment
  UC1531166  Juncus tiehmii Robert F. Thorne, B. Prigge, and C. W. Tilforth Jun 2 1980-Jun 3 1980 54283 San Bernardino 5.2 mi n junction of Silverwood and Hesperia roads (s of Hesperia, near Mojave River); San Bernardino Mts. 975 Comment
  RSA337705  Juncus xiphioides Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53271 San Bernardino San Bernardino Mountains: Cushenbury Springs just below Cement Plant at foot of Cushenbury Canyon. 1220 Comment
  RSA191500  Juniperus californica Robert F. Thorne, Lindsay Smith 1966-5-28 36374 San Bernardino Mojave Desert: just N of the San Gabriel Mountians, along Hwy 138, ca 2 miles WNW of Phelan near Los Angeles County line. 1220 Comment
  RSA0057942  Juniperus californica Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al. 1976-10-30 48667 San Bernardino Granite Mountains, eastern Mojave Desert: Summit ridge just north of Granite Peak. 2050 Comment
  RSA290779  Juniperus occidentalis var. australis Robert F. Thorne, Larry E. DeBuhr, J. Dourley 1974-7-10 44853 Inyo Death Valley National Monument, Panamint Mountains: NW slope of Bennett Peak (9980') along trail to Telescope Peak just S of saddle and Rogers Peak 2987 Comment
  RSA791079  Juniperus osteosperma Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin 1976-10-30 48631 San Bernardino Granite Mountains, eastern Mojave Desert: Cottonwood Springs, near campsite at end of road 1311 Comment
  SD245484  Keckiella antirrhinoides var. antirrhinoides Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49601 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UC1478816  Keckiella antirrhinoides var. microphylla Robert F. Thorne, L. DeBuhr, W. Wisura, and B. Prigge 1977-6-25 49528 San Bernardino ca 2 mi sw Tecopa Pass and Horse Thief Springs (n-facing valley leading s to main ridge, e San Bernardino County); Eastern Mojave Desert, Kingston Mts. 1767 Comment
  RSA555242  Keckiella breviflora Robert F. Thorne, C. W. Tilforth 1971-5-24 39590 Fresno 3 miles beyond Pine Flat Road jct. 335 Comment
  NY786808  Keckiella breviflora var. breviflora R. F. Thorne 1969-6-18 38031 Tulare North bank of East Fork of Kaweah River at bridge, ca. 10 miles from Highway to Sequoia National Park. 762.0 Comment
  CAS-BOT-BC235755  Keckiella cordifolia Robert F. Thorne; D. Propst 1968-5-27 37632 Los Angeles Santa Catalina Island: in Middle Ranch Canyon, etc. Comment
  RSA248872  Keckiella cordifolia Robert F. Thorne 1973-4-12 42964 Los Angeles San Clemente Island, large canyon S of Mosquito Cove N of Chenity. 244 Comment
  UC1302317  Keckiella cordifolia Robert F. Thorne and P. C. Everett 1964-2-7 33485 Los Angeles Middle Canyon; Santa Catalina Island 152 Comment
  UC1409048  Keckiella ternata Robert F. Thorne, J. -P. Simon, and Carlos Munoz P. 1969-6-18 38031 Tulare 10 mi from Sequoia National Park Highway (n bank of East Fork of Kaweah River, at bridge); East Fork of Kaweah River 762 Comment
  UC1409097  Keckiella ternata R. F. Thorne and Hj. Eichler 1968-7-27 37807 San Bernardino just above turn-off Icehouse Canyon; San Gabriel Mts., Angeles National Forest 1499 Comment
  NY790421  Keckiella ternata subsp. ternata R. F. Thorne 1978-6-21 52320 San Bernardino San Gabriel Mountains: ca. 2 miles NE of Wrightwood, west of Sheep Creek 1569.7 Comment
  UC1409055  Kickxia elatine Robert F. Thorne and P. Everett 1965-8-8 35262 Humboldt n edge Eureka (e of Hwy 101) 4 Comment
  RSA291865  Koeleria macrantha R. F. Thorne, M. Z. Thorne, M. DeDecker 1969-7-22 38792 Inyo Sierra Nevada, East Slope, Onion Valley. 2834 Comment
  RSA0087951  Kopsiopsis strobilacea Robert F. Thorne, C. W. Tilforth, John Dourley 1971-7-27 41078 Los Angeles San Gabriel Mts., Angeles National Forest: E ridge of Mt. San Antonio (Old Baldy). Comment
  RSA247887  Krameria erecta Robert F. Thorne, C. W. Tilforth 1973-6-20 44009 San Bernardino Providence Mountains: Mitchell Caverns State Park, large canyon N & W of park headquarters 1341 Comment
  RSA288800  Krameria erecta Robert F. Thorne, C. W. Tilforth, Barry A. Prigge 1977-10-29 50728 San Bernardino Providence Mountains: Bonanza King Mine area. 1265 Comment
  RSA302360  Krameria erecta Robert F. Thorne 1977-11-26 50910 Imperial North of Pilot Knob near jct. of Sidewinder Rd. and hwy I-8, east of Pilot Knob campground. 67 Comment
  GH347698  Krameria grayi R. F. Thorne & C. W. Tilforth 1980-5-28 54163 Unknown San Bernardino Mts: Colorado Desert slopes, S-facing and W-facing, N-S rocky ridge at E side of Whitewater River at mouth of canyon, ca. 1/4-1/2 mile E of Whitewater Post Office Comment
  RSA284167  Krameria grayi Robert F. Thorne, C. W. Tilforth 1977-10-28 50595 San Bernardino Eastern Mojave Desert: bajada S of Granites and E of Old Dad Mountains on dirt road to Budweiser Spring. 976 Comment
  RSA339064  Lactuca serriola R. F. Thorne, T. P. Krantz 1982-8-20 55160 San Bernardino San Bernardino National Forest: Lower Holcomb Creek Botanical Area, near creek where crossed by road N from Fawnskin, N of Delamar Mt., W of Hitchcock Ranch 2195 Comment
  SD69756  Lamarckia aurea Robert F. Thorne 1968-4-28 37489 Santa Barbara Santa Barbara Island, plateau between headwaters of Middle and Graveyard canyons 91 Comment
  CATA2506  Lamarckia aurea Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48785 Santa Barbara Santa Rosa Island: Box Canyon SW of Southeast Anchorage 0 Comment
  RSA172329  Lamarckia aurea R. F. Thorne, P. Everett 1963-4-29 31600 San Luis Obispo ca. 2 mi SE of Cuesta Summit Comment
  RSA339629  Lamium amplexicaule Robert F. Thorne 1980-3-23 54012 Los Angeles Johnson's Pasture, above Claremont. 610 Comment
  RSA340126  Langloisia setosissima subsp. punctata K. Thorne, B. A. Prigge 1978-5-11 51404 San Bernardino N. Clark Mountains: Shire Gypsum Deposit, E. Mojave Desert 1052 Comment
  RSA167520  Larrea tridentata Robert F. Thorne, R. Rutherford 1964-4-10 33597 Imperial Ca 1 mile SE of Glamis on road to Ogilby. Comment
  RSA188059  Lasthenia gracilis R. F. Thorne 1966-4-6 35927 Los Angeles Santa Catalina Island: 1 mile W of Empire Landing 76 Comment
  RSA303749  Lasthenia gracilis R. F. Thorne, C. W. Tilforth 1979-4-4 52447 Ventura Grassy plateau above beach road NE of living quarters (and NNW of airport terminal) 15 Comment
  UC1536022  Lasthenia gracilis Robert F. Thorne, C. W. Tilforth, et al. 1976-4-15 47563 Santa Barbara near ranch building Christy Ranch; Santa Cruz Island 4 Comment
  RSA797824  Lathyrus laetiflorus subsp. laetiflorus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49813 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA188071  Lathyrus vestitus subsp. alefeldii R. F. Thorne 1966-4-28 36205 Los Angeles Santa Catalina Island, road to Renton Mine, Pebbly Beach Canyon. 244 Comment
  RSA187974  Lavatera assurgentiflora subsp. assurgentiflora Robert F. Thorne 1966-4-4 35794 Los Angeles Santa Catalina Island: Bird Rock, N of Isthmus Cove. 8 Comment
  RSA233629  Lavatera assurgentiflora subsp. assurgentiflora Robert F. Thorne 1970-3-6 39400 Los Angeles Indian Rock in Emerald Bay, Santa Catalina Island. 15 Comment
  CAS-BOT-BC372362  Layia pentachaeta subsp. pentachaeta Robert F. Thorne; P. Everett 1967-6-8 37028 Tulare 6 miles NE of Milo on Balch Park Road 1066 Comment
  RSA305443  Layia platyglossa subsp. campestris R. F. Thorne, John Dourley, Walter Wisura 1979-4-25 52633 Santa Barbara Santa Cruz Island. Prisoners Harbor on north side of the island. 2 Comment
  RSA305445  Layia platyglossa subsp. campestris R. F. Thorne 1979-4-25 52633 Santa Barbara Santa Cruz Island. Prisoners Harbor on north side of the island. 2 Comment
  SD124247  Layia platyglossa subsp. campestris Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52654 Santa Barbara San Miguel Island; above and west of Ranger Station. 120 Comment
  RSA251482  Layia platyglossa subsp. campestris R. F. Thorne 1973-4-11 42779 Los Angeles San Clemente Island; small pools in gully at head of Middle Ranch Canyon in grassy plateau. 427 Comment
  RSA246704  Ledum glandulosum subsp. columbianum R. F. Thorne 1965-9-20 35495 Del Norte Along Old Gasquet Toll Road, ca. 5 mi. ENE of Gasquet. 610 Comment
  RSA249507  Ledum glandulosum subsp. columbianum R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-9 35295 Humboldt Big Lagoon. 3 Comment
  RSA791696  Lemna Robert F. Thorne, Percy C. Everett 1962-10-3 31430 San Luis Obispo Oso Flaco Lake. 8 Comment
  RSA234095  Lemna gibba Robert F. Thorne, E. W. Lathrop 1969-6-6 39344 Riverside Santa Rosa Plateau: Rancho California 610 Comment
  RSA357764  Lepidium dictyotum var. dictyotum R. F. Thorne 1973-4-12 42743 Tulare Pixley Pools Reserve. Comment
  GH379673  Lepidium fremontii R. F. Thorne, B. A. Prigge & C. W. Tilforth 1977-10-29 50675 Unknown E. Mojave Desert, Granite Mts: Willow Sprs. Cyn. 1219 Comment
  RSA336072  Lepidium fremontii R. F. Thorne, A. Shmida 1978-5-5 51839 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  RSA303762  Lepidium lasiocarpum R. F. Thorne, C. W. Tilforth 1979-4-4 52440 Ventura San Nicolas Island. Seal Beach, N of caves, W end of island 1 Comment
  SD90423  Lepidium lasiocarpum subsp. lasiocarpum Robert F. Thorne 1966-4-16 36039 Los Angeles San Clemente Island; sandy bank of old, raised beach, 2/3 mile southsoutheast of Eel Point and north of Seal Cove; southwest side of island. 29 Comment
  RSA642719  Lepidium lasiocarpum var. lasiocarpum R. F. Thorne 1964-5-3 33988 San Bernardino 3 miles E of Joshua Tree off road to Twentynine Palms. Comment
  RSA251033  Lepidium montanum var. cinereum R. F. Thorne, C. W. Tilforth 1973-5-30 43622 San Bernardino Eastern Mojave Desert, New York Mountains: upper portion of Caruthers Canyon. 1677 Comment
  RSA251537  Lepidium nitidum R. F. Thorne 1973-4-12 42939 Los Angeles San Clemente Island: Pyramid Cove at S end of island near small point between Triton and Thresher. 6 Comment
  RSA191076A  Lepidium virginicum var. pubescens R. F. Thorne, M. Z. Thorne 1967-7-2 37228 San Bernardino Angeles National Forest: Chapman Ranch, above Mt. Baldy Village. 1357 Comment
  UCR222500  Leptochloa fascicularis R. F. Thorne, R. K. Benjamin, T. P. Krantz 1982-8-20 55087 San Bernardino San Bernardino Mtns, San Bernardino National Forest, Cushenbury Springs, on property of Kaiser Cement Company, lower end of Cushenbury Grade, N slope of San Bernardino Mtns. 1220 Comment
  RSA749772  Leptosiphon aureus subsp. decorus R. F. Thorne 1975-5-3 45405 San Bernardino SE of Kelso Dunes: 7 mi. S of Kelso on Kelbaker Road, and 8 mi. N of Granite Pass. 762 Comment
  SD90455  Leptosiphon bicolor Robert F. Thorne 1973-4-12 42960 Los Angeles San Clemente Island; grassy canyon slopes of large canyon south of Mosquito Cove north of Chenity. 334 Comment
  RSA250594  Leptosiphon breviculus R. F. Thorne, R. Carolin, Christopher Davidson 1967-3-23 41600 Los Angeles San Gabriel Mountains, Angeles National Forest: Grandview Canyon; Mojave Desert slopes north of Mile High Ranch. 1371 Comment
  RSA334160  Leptosiphon ciliatus R. F. Thorne, Carlos Munoz 1969-6-17 38027 San Bernardino San Gabriel Mts, Angeles National Forest: Dry, S-facing talus slope, lower end of Ice-house Canyon 1768 Comment
  SBBG128690  Leptosiphon floribundus subsp. floribundus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49714 Orange Bedford Truck Trail, ca. 0.8 km below jct with Main Divide Truck Trail; Santa Ana Mtns Comment
  RSA749249  Leptosiphon montanus R. F. Thorne, C. W. Tilforth 1971-5-25 39658 Fresno 4.9 miles E of Auberry along crest of Bald Mt., slopes above Bald Mill Creek. Comment
  RSA172225  Leptosiphon septentrionalis R. F. Thorne 1963-5-16 31743 Kern ca. 14 miles S of Bodfish. Comment
  SD69850  Leptosyne gigantea Robert F. Thorne, P. Everett 1967-4-17 36770 Santa Barbara Santa Cruz Island: beach bluffs at mouth of Willows Canyon 4 Comment
  RSA252095  Lesquerella kingii subsp. latifolia R. F. Thorne, C. W. Tilforth 1973-6-21 44097 San Bernardino E. Mojave Desert, Mid Hills: near Bathtub Springs. 1768 Comment
  RSA275776  Lesquerella kingii subsp. latifolia R. F. Thorne, Walter Wisura, Christopher Davidson, B. Prigge 1977-5-26 49177 San Bernardino Clark Mountain Range; along trail to Fir Canyon near its mouth 1585 Comment
  RSA275965  Lesquerella kingii subsp. latifolia R. F. Thorne, Walter Wisura, B. Prigge 1977-6-24 49482 San Bernardino Clark Mountains, base of limestone cliffs at head of NE-trending Forsellesia Canyon, 1 mile south of Frank Curtis Mine. 1950 Comment
  RSA225978  Lessingia glandulifera var. glandulifera R. F. Thorne, C. W. Tilforth 1971-6-29 40676 Los Angeles Soledad Canyon: N slope San Gabriel Mountains, ca 1.5 miles E of junction of Aliso Creek wash and Santa Clara River. Angeles National Forest. 884 Comment
  UC1375326  Lessingia glandulifera var. glandulifera Robert F. Thorne and C. W. Tilforth 1971-6-29 40676 Los Angeles ca. 1 1/2 mi e of junction of Aliso Creek wash and Santa Clara River in Soledad Canyon; n slope San Gabriel Mts., Angeles National Forest 883 Comment
  RSA225967A  Lessingia glandulifera var. glandulifera R. F. Thorne, C. W. Tilforth 1971-6-29 40684 Los Angeles San Gabriel Mountains, Angeles National Forest: N slope San Gabriel Mountains, ca. 1.5 mi E of junction of Aliso Creek wash and Santa Clara River, in Aliso Canyon 854 Comment
  RSA191773  Leucophysalis nana Robert F. Thorne, James Henrickson 1963-7-10 33146 Mono 1.3 miles beyond Sardine Creek meadow, ca 1 mile E of Sonora Pass, Toiyabe National Forest. 2866 Comment
  RSA333609  Lewisia brachycalyx R. F. Thorne, Barry A. Prigge, Tilforth 1980-6-2 54343 San Bernardino Upper Holcomb valley: near historic log cabin at upper end of Caribou Creek. Comment
  RSA172247  Lewisia rediviva R. F. Thorne, Percy C. Everett 1963-4-20 31562 Monterey 0.5 miles N of Jolon. 335 Comment
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Aug 4 2010
  SBBG31217  Leymus condensatus R. F. Thorne with P. C. Everett 1965-6-23 34993 Los Angeles near mouth of Hamilton Cyn 22 Comment
  RSA303663  Leymus triticoides R. F. Thorne, C. W. Tilforth, et al. 53507 San Bernardino San Bernardino National Forest; shallow pond and grassy swales on placer workings just W of Holcomb Valley Campground. 2248 Comment
  RSA246914  Leymus vancouverensis R. F. Thorne, P. Everett 1965-8-9 35313 Humboldt Big Lagoon County Park 3 Comment
  RSA3576137  Lilaea scilloides Robert F. Thorne 1973-5-23 43874 Riverside Santa Rosa Plateau: Mesa de Colorado 610 Comment
  UCR60497  Lilaea scilloides R. F. Thorne 1973-5-23 43841 Riverside Santa Rosa Plateau, north side of Mesa de Colorado 610 Comment
  CAS-BOT-BC451664  Lilaea scilloides Robert F. Thorne; P. Everett 1963-6-12 32264 San Luis Obispo 1 mile N of entrance to Piedras Blancas Point 7 Comment
  SEINET10501653  Lilaea scilloides Robert F. Thorne 1974-5-23 Thorne 44658 Riverside Santa rosa plateau, rancho california: near junction of tenaja road and road to Ranch headquarters in cold, clear water of small stream, with ranunculus Aquatilis, marsilea mucronata, eleocharis montevidensis parishii, potamogeton Foliosus, callitriche heterophylla bolanderi, etc. 610 Comment
  RSA376594  Lilium humboldtii subsp. ocellatum Robert F. Thorne, C. W. Tilforth, et al. 1976-4-13 47500 Santa Barbara N-facing slope above Canada Cervada, ca. 0.5 mile W of Cuesta Ridge, W end of island 396 Comment
  RSA634229  Lilium humboldtii subsp. ocellatum Robert F. Thorne, C. W. Tilforth, John Dourley, J. Benny 1969-6-26 38170 San Bernardino San Gabriel Mountains: San Bernardino National Forest. Tributary to Lytle Creek Canyon near to mouth. 762 Comment
  RSA339773  Lilium kelleyanum Robert F. Thorne, Walter Wisura, David C. Michener, James R. Shevock 53732 Tulare Moses Mountain: campground at Mountain Home State Forest, where Tule River crosses the road coming down Moses Mountain 1982 Comment
  RSA170015  Lilium maritimum Robert F. Thorne, Percy C. Everett 1964-10-19 34186 Mendocino 0.5 miles N of Hwy 20, on Summer Lane, 2 miles SE of Fort Bragg. Comment
  RSA191636  Limosella acaulis Robert F. Thorne, M. Z. Thorne 1966-8-29 36581 Los Angeles Angeles National Forest: Crystal Lake Recreation Area, at edge of Crystal Lake at upper end of canyon of N Fork of San Gabriel River 1677 Comment
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir Comment
  RSA210885  Limosella aquatica Robert F. Thorne, James Henrickson, C. W. Tilforth 1969-9-4 39119 -a Modoc N Fork of Pit River 3.4 mi N of Alturas where crossed by Highway 395. 1341 Comment
  RSA302393  Limosella aquatica Robert F. Thorne, Barry A. Prigge, Mike Herter 1979-7-3 53332 San Bernardino San Bernardino National Forest. Holcomb Creek and adjacent meadow and rocky slopes just west of Hitchcock Ranch on 3N12 2180 Comment
  RSA315108  Limosella aquatica Robert F. Thorne, Kay L. Wright, R. K. Benjamin, J. Herrick 1982-9-3 55275 San Bernardino On alkaline, desiccated margin of north shore of Balwin Lake, Nature Condervancy Reserve. 2043 Comment
  RSA0011457  Linanthus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46973 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA749768  Linanthus androsaceus subsp. micranthus R. F. Thorne 1965-3-27 35657 Santa Barbara About 5 miles up Figueroa Mountain Road from Midland School 793 Comment
  RSA314554  Linanthus demissus R. F. Thorne, W. Wisura, B. Busenberg, RK Benjamin 1983-5-6 55523 Inyo Funeral Mountains. Campsite, lower end of Red Amphitheater, just E. of Death Valley National Monument boundary. 768 Comment
  RSA336174  Linanthus dianthiflorus subsp. dianthiflorus R. F. Thorne, M. Z. Thorne, Walter Wisura 1978-5-21 52004 Riverside Santa Rosa Plateau: Mesa de Colorado. 610 Comment
  RSA755258  Linanthus jonesii R. F. Thorne, W. Wisura, B. Busenburg, R. K. Benjamin 1983-5-6 55605 Inyo Death Valley Nat'l Monument, Funeral Mtns, upper end of Red Amphitheatre 976 Comment
  RSA758623  Linanthus parryae R. F. Thorne 1995-4-25 63046 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area. 1067 Comment
  RSA340154  Linanthus pungens subsp. pulchriflorus R. F. Thorne, C. W. Tilforth, John Little 1979-6-14 53108 San Bernardino North side of W end of Baldwin lake. 2043 Comment
  RSA191899  Linaria canadensis var. texana Robert F. Thorne, Percy C. Everett 1963-4-21 31620 San Luis Obispo S side of Morro Bay. 6 Comment
  RSA336370  Linum lewisii Robert F. Thorne, Christopher Davidson 1978-6-18 52216 San Bernardino Cushenbury Canyon: Along Chicopee Creek below Whiskey Springs. 1616 Comment
  UCR168511  Linum lewisii R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-14 49354 San Bernardino Eastern Mojave Desert, New York Mtns, mouth of Keystone Canyon 1707 Comment
  SD69489  Logfia filaginoides Robert F. Thorne, P. Everett 1965-6-22 34897 a Los Angeles Santa Catalina Island; rocky slope at upper end of Avalon 214 Comment
  UC1348965  Logfia filaginoides Robert F. Thorne 1966-4-4 35760 Los Angeles bluff se of Ballast Point and Catalina Harbor (Isthmus); Santa Catalina Island 60 Comment
  RSA191882  Lolium perenne subsp. multiflorum R. F. Thorne, P. Everett 1963-6-12 32249 San Luis Obispo At Arroyo de la Cruz Creek Comment
  RSA343106  Lolium perenne subsp. multiflorum R. F. Thorne, Walter Wisura, E. Lathrop, Sara Meury 1985-5-18 60629 Riverside Santa Rosa Plateau: Cole Canyon, near entrance to Nature Conservancy Reserve. 530 Comment
  RSA226070  Lolium temulentum R. F. Thorne 1971-6-17 39949 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  RSA234069  Lolium temulentum R. F. Thorne, E. Lathrop 1969-5-19 37982 Riverside Santa Rosa Plateau: Rancho Caifornia, Mesa de Colorado 625 Comment
  RSA0036703  Lomatium R. F. Thorne 1973-5-23 43877 Riverside SANTA ROSA PLATEAU: Mesa de Colorado 610 Comment
  UC1400374  Lomatium dasycarpum subsp. dasycarpum Robert F. Thorne 1971-3-31 41438 Los Angeles n. of Mountain Ave. Claremont (Johnson's Pastures); San Gabriel Mts., , Johnson's Pastures 548 Comment
  RSA230668  Lomatium nevadense var. parishii R. F. Thorne, M. Z. Thorne 1969-7-9 38543 Los Angeles Angeles National Forest: summit of Table Mountain above Big Pines Ranger Station 2134 Comment
  RSA640865  Lomatium parryi R. F. Thorne, C. W. Tilforth 1974-5-10 44504 San Bernardino Mojave Desert: New York Mountains, near Keystone Mine. 1890 Comment
  UC1951288  Lomatium utriculatum Robert F. Thorne and P. Everett 1963-4-19 31533 San Benito 11 miles S of Paicines. Comment
  UC1929721  Lomatium utriculatum Robert F. Thorne, P. Everett 1963-6-8 32177 San Luis Obispo 6 miles NW of Bradley on road to Jolon. Comment
  UC1929827  Lomatium utriculatum Robert F. Thorne, P. Everett 1963-4-18 31487 San Benito Across from Twisselman Ranch house, ca. 8.2 miles SSE of Cholame. Comment
  RSA190857  Lomatium vaginatum R. F. Thorne, P. Everett 1967-4-17 36803 Santa Barbara Santa Cruz Island. 1/4 mile W of Sobrante (Head of Canada Pomona). 122 Comment
  RSA167838  Lonicera hispidula var. vacillans R. F. Thorne, Percy C. Everett 1964-2-7 33487 Los Angeles Santa Catalina Island; Along creek in Middle canyon below dam 183 Comment
  SD69038  Lonicera hispidula var. vacillans Robert F. Thorne 1966-9-15 36694 Los Angeles Santa Catalina Island; Middle Ranch Canyon near dry stream bed. 239 Comment
  RSA755069  Lotus argyraeus var. notitius Robert F. Thorne, Jim Hendrickson 1975-5-3 45376 San Bernardino West slope of Providence Mountains, ca. 5 miles SSE of Kelso on Vulcan Mine Road. 793 Comment
  UCR228152  Lotus crassifolius R. F. Thorne, Stan T. Blake, K. Thorne 1965-6-4 34796 Fresno Sierra Nevada Mountains, Sequoia National Forest, above King's River along Hwy 180 1494 Comment
  RSA283103  Lotus davidsonii R. F. Thorne, Christopher Davidson, W. Wisura, Lois Goodman, Tim Krantz 1977-7-19 49834 San Bernardino San Gorgonio Wilderness, along Fish Creek Trail E of Grinnell Mt. 2805 Comment
  RSA584754  Lotus grandiflorus var. grandiflorus R. F. Thorne, Christopher Davidson, W. Wisura, T. P. Krantz 1977-7-21 49974 San Bernardino Near trailhead at Camp Angelus for San Bernardino Peak Trail. 1798 Comment
  RSA188209  Lotus hamatus R. F. Thorne, P. C. Everett 1965-6-22 34894 Los Angeles Santa Catalina Island., upper end of Avalon Canyon along road. 213 Comment
  RSA191178  Lotus heermannii var. heermannii R. F. Thorne 1967-7-19 37162 Los Angeles San Gabriel Mountains, Angeles National Forest: Big Cienega Springs, above Crystal Lake Recreation Area. 1982 Comment
  HSC78908  Lotus procumbens R. F. Thorne, Christopher Davidson, B. A. Prigge, C. W. Tilforth 1979-5-22 53010 San Bernardino San Bernardino Mountains, near relay station on Grapevine Canyon Road, ca. 4 air mi S of Fifteenmile Point. 1555 Comment
  RSA33728  Lotus procumbens R. F. Thorne, B. A. Prigge, C. W. Tilforth 1980-6-2 54266 San Bernardino Near Mojave River, S of Hesperia and 5.2 miles N of junction of Silverwood Lake and Hesperia roads. 976 Comment
  RSA188076  Lotus salsuginosus R. F. Thorne 1966-4-28 36198 Los Angeles Santa Catalina Island, road to Renton Mine, Pebbly Beach Canyon. 244 Comment
  RSA233531  Lotus strigosus R. F. Thorne, C. W. Tilforth, et al. 1972-6-29 42149 San Bernardino San Gabriel Mountains, San Bernardino National Forest: along Cajon Creek near Cajon Campground in Cajon Canyon 838 Comment
  RSA250692  Lotus strigosus R. F. Thorne 1971-4-2 41433 Los Angeles Johnson's Pasture's, N. of Mountain Avenue, Claremont. 549 Comment
  RSA632843  Lotus strigosus R. F. Thorne, J. P. Simon, John Dourley, H. Caulfield 1970-5-1 39529 Los Angeles Mojave Desert: Along road to Valyermo ca. 1 mile east of Pallett Ranch at foot of grade north of Pinyon Pine Ridge in Shoemaker Canyon. 1402 Comment
  RSA252894  Lotus strigosus R. F. Thorne 1973-5-11 43550 Los Angeles Along Mt. Emma Road: 1.9 mi W of Little Rock Creek below the dam. 1159 Comment
  RSA633870  Lotus strigosus var. hirtellus R. F. Thorne, J. P. Simon, C. W. Tilforth 1969-6-24 38112 Riverside San Bernardino National Forest, San Jacinto Mountains: Above James Reserve in Hall Canyon. 1677 Comment
  RSA167566A  Lotus tomentellus R. F. Thorne, P. C. Everett 1964-4-18 33809 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass. 915 Comment
  RSA340198  Lotus unifoliolatus R. F. Thorne, Walter Wisura 1979-8-24 53686 San Bernardino San Bernardino Mts.-Baldwin Lake: NW shore of lake 2043 Comment
  UC1349362  Lotus wrangelianus Robert F. Thorne 1966-4-6 35894 Los Angeles ridge between White Cove and Moonstone Cove; Santa Catalina Island 15 Comment
  RSA791693  Lupinus Robert F. Thorne, James Henrickson 1963-8-9 32969 Mono 9 miles W of Sonora Junction, along Leavitt Creek, Toiyabe National Forest. 2713 Comment
  CATA2295  Lupinus albifrons var. douglasii Robert F. Thorne, C. W. Tilforth, et al. 1979-4-3 52357 Ventura San Nicolas Island: Bluffs, dunes, and beaches, (mostly from roadway to beach) on E end of island, NE end of Airport Terminal 12 Comment
  SEINET10484537  Lupinus albifrons var. douglasii Robert F. Thorne, C. W. Tilforth 1979-4-3 Thorne 52357 Ventura San nicolas island: bluffs, dunes, and beaches, mostly from roadway to beach, on e end of island ne end of airport terminal. Mostly in lycium-lupinus and mesembryanthemum communities, with lupinus albifrons douglasii, astragalus traskiae, lomatium insulare, lotus argophyllus, coreopsis gigantea, etc. Low silvery shrub. Abundant Comment
  SEINET10837937  Lupinus alpestris Thorne 1983-7-1 THORNE 56101 Inyo Panamint mountains; from the mouth of water (thorndike) conyon to the spring on The n slope of rogers peak, in pinyon-juniper-mountain mahogany woodland; Riparian, mesic woodland and drier, rocky slopes in pinyon woodland; slender, Erect perennial with pale lavender flowers 2316 Comment
  RSA230687  Lupinus andersonii R. F. Thorne 1969-7-9 38505 Los Angeles Angeles National Forest: summit of Table Mountain above Big Pines Ranger Station. 2134 Comment
  SEINET10903762  Lupinus arboreus Robert F. Thorne 1965-9-19 Thorne 35466 Del Norte Ca 1-2 miles se of cresent city; on low dunes of beach with vicia angustifolia, Cakile maritima, c edentula, lathyrus japonicus glaber, elymus, etc.; Low Perennial ca 0.5 m, flowers yellow Comment
  RSA311215  Lupinus argenteus R. F. Thorne, Walter Wisura, Mark Patterson 1983-7-3 56162 Inyo Panamint Mountains: between Bennett Peak and Telescope Peak in Death Valley National Monument. 2896 Comment
  RSA247835  Lupinus arizonicus R. F. Thorne, C. W. Tilforth 1973-3-8 42574 Inyo Death Valley National Monument: Rhodes Wash below junction with Bradbury Wash. 335 Comment
  SEINET10488531  Lupinus arizonicus Robert F. Thorne, C. W. Tilforth 1973-3-8 Thorne 42574 Inyo Death valley national monument; rhodes wash below junction with bradbury wash, On rocky bluff s of wash. Flowers purplish blue 335 Comment
  RSA167572  Lupinus benthamii var. benthamii Robert F. Thorne, Percy C. Everett, K. Thorne 33712 Mariposa Grassy roadside along Hwy 49, 1/2 mile S of Stanislaus River. 305 Comment
  RSA279113  Lupinus bicolor R. F. Thorne 1971-3-18 41498 Los Angeles Cobal Canyon, 3 miles N of Claremont. 502 Comment
  RSA311319  Lupinus bicolor R. F. Thorne 1969-5-29 37993 San Bernardino San Gabriel Mts., Angeles National Forest: Chapman Ranch, above Baldy Village, San Antonio Canyon 1359 Comment
  SD247647  Lupinus bicolor R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49713 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA188073  Lupinus bicolor subsp. microphyllus R. F. Thorne 1966-4-30 36351 Los Angeles Santa Catalina Island; Grassy slope above Gallagher's Canyon 427 Comment
  SEINET10484878  Lupinus bicolor subsp. microphyllus Robert F. Thorne 1971-3-31 Thorne 41445 Los Angeles San gabriel mountains; johnson's pastures, n of mountain ave 549 Comment
  SEINET10484975  Lupinus bicolor var. umbellatus Robert F. Thorne 1966-4-17 Thorne 36099 Los Angeles San clemente island: desiccated vernal pool on mesa just nw of thirst, elev. C. 1800 Ft.; With deschampsia danthonioides, calandrinia ciliata meniesii, Gilia nevinii, pectocarya linearis ferocula, plagiobothrys spp., Microseris Spp., Etc. 549 Comment
  RSA751815  Lupinus concinnus Robert F. Thorne, Percy C. Everett 1964-4-18 33833 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass. 915 Comment
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Apr 19 2015
  RSA760356  Lupinus concinnus R. F. Thorne 1995-4-25 62953 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area 1067 Comment
  UCR245893  Lupinus concinnus R. F. Thorne 1995-3-29 63014 Riverside Transverse Range; San Bernardino Mtns., Whitewater Canyon 600 Comment
  RSA307123  Lupinus concinnus subsp. concinnus Robert F. Thorne, Barry A. Prigge 1979-5-10 52843 San Bernardino San Bernardino Mountains: Silverwood Lake Recreational Park on SW bay of lake. 1037 Comment
  RSA356755  Lupinus concinnus var. concinnus R. F. Thorne 1973-5-23 45538 Riverside Santa Rosa Plateau:; N side of Mesa de Colorado. 610 Comment
  RSA229060  Lupinus elatus R. F. Thorne 1969-7-29 38855 Los Angeles N facing slope above Angeles Crest Hwy N & below Lily Spring at headwater of S fork Big Rock Creek 2317 Comment
  CAS-BOT-BC216542  Lupinus excubitus var. johnstonii R. F. Thorne; M. Z. Thorne 1969-7-9 38473 Los Angeles S facing slope of Table Mountain, above Big Pines Ranger Station, San Gabriel Mountains, Angeles National Forest 2118 Comment
  RSA771612  Lupinus excubitus var. johnstonii Robert F. Thorne, C. W. Tilforth, John Dourley, R. Scoggin 1972-8-11 42204 Los Angeles Angeles National Forest; Along Angeles Crest Hwy near Three Points. 1829 Comment
  SD82957  Lupinus excubitus var. johnstonii R. F. Thorne, M. Z. Thorne 1969-7-9 38503 Los Angeles Angeles National Forest: San Gabrial Mountains, summit of Table Mountain 2133 Comment
  SEINET10870994  Lupinus flavoculatus Robert F. Thorne, C. W. Tilforth 1973-6-21 Thorne 44080 San Bernardino E. Mojave desert, mid hills, pinto valley: c. 2 Mi. E of bathtub springs; on Grassy plateau in juniper woodland-sagebrush scrub with artemisia tridentata, Lycium andersonii, l. Cooperi, etc. Fls purple. 1676 Comment
  RSA592240  Lupinus formosus var. bridgesii Robert F. Thorne, Percy C. Everett 1962-10-4 31456 Monterey Field in front of Carmel Valley Inn, east Salinas Road junction with Carmel Valley Road. 91 Comment
  RSA226901  Lupinus hyacinthinus R. F. Thorne 1971-6-5 39812 San Bernardino SAN GABRIEL MTS., SAN BERNARDINO NATIONAL FOREST: Upper San Sevaine Campground, San Sevaine Flats 1677 Comment
  RSA232287  Lupinus latifolius subsp. parishii R. F. Thorne 1969-7-10 38412 Los Angeles Along Mescal Creek. 2043 Comment
  RSA639646  Lupinus odoratus var. odoratus Robert F. Thorne 1978-5-5 51782 San Bernardino Lucerne Valley: 0.3 miles W of Lucerne Valley (2.6 miles W of jct with Cushenbury Grade Road) 950 Comment
  RSA0028835  Lupinus sparsiflorus subsp. sparsiflorus Robert F. Thorne, F. R. Fosberg, M. H. Sachet, Charles C. Herbst 1983-4-23 55500 Riverside San Bernardino Mountains: Whitewater River where road crosses river below fish hatchery, ca. 4 miles north of Whitewater Post Office. 640 Comment
  RSA191019  Lupinus sparsiflorus subsp. sparsiflorus R. F. Thorne 1963-5-5 32278 Los Angeles Cobal Canyon, Foothills of San Gabriel Mts., 4 miles N of Claremont 518 Comment
  RSA314652  Lupinus sparsiflorus subsp. sparsiflorus Robert F. Thorne, F. R. Fosberg, Sachet, Herbst 1983-4-23 55500 Riverside San Bernardino Mountains: Whitewater River where road crosses river below fish hatchery, ca. 4 miles north of Whitewater Post Office. 640 Comment
  RSA636143  Lupinus sparsiflorus subsp. sparsiflorus R. F. Thorne 1974-4-9 44702 Los Angeles San Gabriel Mountains: Bob's Gap in Holcomb Ridge. 1219 Comment
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Feb 7 2008
  SEINET10490975  Lupinus sparsiflorus subsp. sparsiflorus Robert F. Thorne, C. W. Tilforth 1971-4-9 Thorne 41512 Los Angeles San gabriel mts, angeles national forest. San dimas canyon near dam on san Dimas creek, on disturbed dry slopes. Fls purple, annual; with erharta Calycina, camissonia ignota, c. Hirtella, eschscholzia californica, lotus Salsuginosus, etc. 457 Comment
  RSA751816  Lupinus spectabilis Robert F. Thorne, Percy C. Everett 1964-4-15 33710 Mariposa ca. 1 miles N of Bagby 290 Comment
  SEINET10486276  Lupinus subvexus Thorne 1967-6-8 THORNE 36966 Tulare Foothill woodland, ca 6.5 mi n of springville near milo, along n fork of tule River with aesculus californica, quercus douglasii, clarkia spp, trifolium spp, Brodiaea lutea, orthocarpus linearilobus, senecio brewerim, etc. Flowers Purplish. 549 Comment
  RSA511034  Lupinus subvexus var. subvexus Robert F. Thorne, Percy C. Everett, K. Thorne 1963-4-20 31552 Monterey 15.7 miles S of King City 335 Comment
  RSA363992  Lupinus succulentus Robert F. Thorne, C. W. Tilforth 1976-4-14 47551 Santa Barbara Santa Cruz Island. Near head of canyon ca. 1 mile NW of Mt. Pleasant, running into Santa Barbara Channel ca. 1 mi W of Prisoners Harbor 122 Comment
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Oct 8 2014
  RSA187874  Lupinus truncatus Robert F. Thorne 1966-4-7 35951 Los Angeles Santa Catalina Island: Cherry Valley. 61 Comment
  RSA287820  Lupinus truncatus Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-30 48731 Santa Barbara Santa Rosa Island: Canada Lobos. 30 Comment
  SEINET10489082  Lupinus truncatus Robert F. Thorne 1983-4-23 Thorne 55499 Riverside San bernandino mts: sandy wash along whitewater river where road crosses river Below fish hatchery, ca 4 mi n or whitewater post office. Erect, Reddish-purple-flowered annual. 640 Comment
  RSA177910  Lupinus variicolor Robert F. Thorne 1965-4-21 34402 Marin Near Drakes Beach, Point Reyes National Seashore. 5 Comment
  RSA226926  Luzula comosa Robert F. Thorne 1971-6-5 39809 San Bernardino SAN GABRIEL MTS., SAN BERNARDINO NATIONAL FOREST: Upper San Sevaine Campground, San Sevaine Flats 1677 Comment
  RSA281000  Luzula comosa Robert F. Thorne 1969-7-22 38752 Inyo Sierra Nevada, E slope, Onion Valley. 2774 Comment
  GH359003  Luzula macrantha R. F. Thorne 1971-6-5 39809 Unknown San Gabriel Mts., San Bernardino National Forest: Upper San Sevaine Campground, San Sevaine Flats Comment
  RSA249744  Lycium andersonii Robert F. Thorne, C. W. Tilforth 1973-4-20 42985 Los Angeles San Gabriel Mountains, Mojave Desert slope: 1 mile N of Bob's Gap, 3.2 miles S of Llano, N slope of Holcomb Ridge. 1143 Comment
  RSA201743  Lycium californicum Robert F. Thorne 1969-3-4 s.n. Orange 2.5 miles S of Corona del Mar 15 Comment
  RSA308021  Lycium cooperi Robert F. Thorne, C. W. Tilforth, Barry A. Prigge, C. Davidson 1979-5-22 52969 San Bernardino South of Santa Fe Railroad near Grapevine Canyon Road ca. 3 air miles SSE of Fifteen Mile Point, near junction of Oreole and Flicker Streets. 1098 Comment
  RSA305560  Lyonothamnus floribundus subsp. aspleniifolius Robert F. Thorne, Dourley, Walter Wisura 1979-4-23 52498 Santa Barbara Santa Cruz Island. North of Red Peak in bottom of canyon draining toward Pelican Bay 122 Comment
  CAS-BOT-BC142277  Lyonothamnus floribundus subsp. floribundus Robert F. Thorne 1970-3-5 39354 Los Angeles NE slope of Blackjack Mt., at upper end of Swain's Canyon - Santa Catalina Island 365 Comment
  RSA187783  Lyonothamnus floribundus subsp. floribundus Robert F. Thorne 1966-4-29 36320 Los Angeles Santa Catalina Island. Below road to White's Landing above turn-off to Echo Lake 404 Comment
  RSA190928  Lyonothamnus floribundus subsp. floribundus Robert F. Thorne 1967-5-19 36882 Los Angeles Santa Catalina Island. Echo Lake branch of upper Swain's Canyon. 366 Comment
  UCD169742  Lythrum californicum R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49631 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs. 205 Comment
  RSA343103  Lythrum hyssopifolia Robert F. Thorne, Walter Wisura, E. W. Lathrop, S. Meury 1985-5-18 60633 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along seasonal stream in Cole Canyon, near entrance 534 Comment
  RSA788960  Lythrum hyssopifolia Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49587 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA313082  Machaeranthera canescens var. canescens R. F. Thorne, J. Henrickson 1963-8-10 33099 Mono 1.3 miles beyond Sardine Creek Meadow, ca. 1 mile E of Sonora Pass, Toiyabe National Forest 2866 Comment
  RSA0011633  Madia R. F. Thorne, Percy C. Everett 1965-8-1 35072 Monterey 4 miles north of Watsonville, top of second major hill north of town 91 Comment
  RSA303666  Madia elegans R. F. Thorne, C. W. Tilforth 1979-7-12 53395 San Bernardino N end of Lake Gregory. 1387 Comment
  UC1409104  Madia elegans Robert F. Thorne and S. T. Blake 1965-6-5 34812 Fresno 5 mi from Auberry (toward Pine Ridge); Sierra National Forest 1127 Comment
  RSA191083  Madia gracilis R. F. Thorne, M. Z. Thorne 1967-7-2 37223 San Bernardino San Gabriel Mountains, Angeles National Forest: Chapman Ranch, above Mt. Baldy Village 1357 Comment
  SD69013  Madia gracilis Robert F. Thorne, D. Propst 1968-5-29 37690 Los Angeles Santa Catalina Island; upper Cape Canyon below reservoir 305 Comment
  UCR196019  Madia yosemitana R. F. Thorne, C. W. Tilforth 1971-5-25 39678 Fresno Sierra Nevada Mtns, near Alder Springs, c. 4.2 mi west-southwest of Pine Ridge 1311 Comment
  RSA167574  Mahonia repens R. F. Thorne, P. Everett 1964-4-16 33744 El Dorado 2 miles S of center of Placerville. 640 Comment
  GH420480  Malacothamnus fasciculatus R. F. Thorne & P. Everett 1965-6-24 35045 Unknown Santa Catalina Island 30 Comment
  RSA250469  Malacothamnus fremontii Robert F. Thorne, John Dourley 1967-10-10 37348 Los Angeles San Gabriel Mts.; Angeles National Forest: Blue Ridge. 2256 Comment
  RSA248900  Malacothrix foliosa R. F. Thorne 1973-4-12 42945 Los Angeles San Clemente Island: Pyramid Cove at S end of island near small point between Triton and Thresher. 6 Comment
  RSA199143  Malacothrix foliosa subsp. philbrickii R. F. Thorne 1968-4-28 37485 Santa Barbara Santa Barbara Island. S-facing slope of high bluff on E side of embayment of Cat Canyon 69 Comment
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Feb 14 2006
  RSA176248  Malacothrix glabrata R. F. Thorne 1964-5-3 33984 San Bernardino 3 miles E of Joshua Tree off road to Twentynine Palms. Comment
  RSA275899  Malacothrix glabrata R. F. Thorne, C. W. Tilforth, A. Shmida, B. A. Prigge 1978-5-9 51220 San Bernardino Kelso Dunes: southern edge of Kelso Dunes near Bull Canyon Wash from Granite Mountains 731 Comment
  RSA307359  Malacothrix glabrata R. F. Thorne 1979-5-10 52927 San Bernardino Arrastre Canyon about 4.5 mi. S of Deadman Point. 1128 Comment
  UCR231135  Malacothrix incana R. F. Thorne, Percy C. Everett 1963-4-21 31631 San Luis Obispo Central Coast, south end of Morro Bay between bay and ocean 12 Comment
  CAS-BOT-BC347941  Malacothrix saxatilis var. tenuifolia Robert F. Thorne; P. Everett 1965-6-23 34998 Los Angeles Santa Catalina Island: mouth of Hamilton Canyon, NW of Avalon 7 Comment
  RSA225981  Malacothrix saxatilis var. tenuifolia R. F. Thorne, A. C. Gibson 1971-5-22 39754 Los Angeles San Gabriel Mts., Angeles National Forest: upper Fish Canyon near Falls 396 Comment
  SD69511  Malva assurgentiflora Robert F. Thorne 1966-4-4 35794 Los Angeles Santa Catalina Island; Bird Rock, north of Isthmus Cove. 7 Comment
  RSA296334  Malva parviflora Robert F. Thorne, C. W. Tilforth 1979-4-3 52366 Ventura San Nicolas Island: elevation ca. 40 ft. above dunes to 15 ft at dunes. Comment
  RSA188200  Marah macrocarpa R. F. Thorne, P. C. Everett 1965-6-22 s.n. Los Angeles Santa Cataline Island; near dump at Lookout Point 61 Comment
  RSA233391  Marah macrocarpa R. F. Thorne 1966-4-15 s.n. Los Angeles San Clemente Island: 2/3 miles SSE of Eel Point (and N of seal Cove), SW side of island 30 Comment
  UCD124987  Marrubium vulgare Robert F. Thorne; W. Wisura, C. Davidson 1977-5-26 49069 San Bernardino East San Bernardino County: East Mojave Desert, Clark Mountain Range; Pachalka Spring. 1493 Comment
  RSA305458  Marrubium vulgare Robert F. Thorne 1979-4-25 52594 Santa Barbara Santa Cruz Island. Campus of the Biological Station west of the Stanton Ranch, Canada del medio 76 Comment
  UCD134607  Matricaria discoidea Robert F. Thorne 1984-5-6 58400 Santa Barbara Santa Cruz Island: Prisoners' Bay Canyon, behind Prisoners' Harbor Camp. 4 Comment
  RSA188229  Medicago polymorpha Robert F. Thorne, Percy C. Everett 1965-6-23 34972 Los Angeles Santa Catalina Island: Hay Press Reservoir. 412 Comment
  RSA247071  Melica frutescens R. F. Thorne 1973-4-28 43232 San Bernardino Providence Mountains, Canyon above Cornfield Springs 1159 Comment
  RSA342044  Melica frutescens R. F. Thorne, W. A. Tilforth, L. Schultz, R. K. Benjamin, J. Hogge 1980-4-16 54084 Riverside Branch Ravine W from Whitewater Canyon, W of road and ca. 3.2 miles N of Hwy 10 and Whitewater PO. 610 Comment
  RSA247909  Melica imperfecta R. F. Thorne, C. W. Tilforth 1973-6-20 44014 San Bernardino Providence Mountains: Mitchell Caverns State Park, large canyon N & W of park headquarters 1341 Comment
  RSA754908  Melica imperfecta R. F. Thorne 1995-4-25 62965 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area 1067 Comment
  RSA311160  Melica stricta R. F. Thorne, Walter Wisura, M. Patterson, et al. 1983-7-4 56192 Inyo Panamint Mountains: Hike up Water (Thorndike) Canyon from mouth to upper end on the north slope of Rogers Peak, Death Valley National Monument. 2268 Comment
  UCD108093  Melilotus indicus Robert F. Thorne; P. C. Everett 1965-5-11 34566 Los Angeles N beach of Little Harbor, Santa Catalina Island. 1 Comment
  RSA275838  Menodora spinescens Robert F. Thorne, Walter Wisura, Christopher Davidson 1977-5-26 49084 San Bernardino Clark Mtn Range: near Pachalka Spring. 1494 Comment
  UC1949956  Mentzelia R. F. Thorne 1982-8-10 55186 Tulare Sierra Nevada; Southern Sierra Nevada region: Kings Canyon National Park, Kings Canyon road. Comment
  RSA314598  Mentzelia albicaulis Robert F. Thorne 1973-4-29 43302 San Bernardino Mid Hills: 5.8 miles E of Cima-Kelso Road in Cedar Canyon. 1524 Comment
  RSA229144  Mentzelia congesta Robert F. Thorne, C. W. Tilforth 1971-6-30 s.n. Los Angeles San Gabriel Mts., Angeles National Forest: Desiccated branch of S fork of Little Rock Creek, 1.8 miles below Alder Saddle in Pinyon Flats area. 1555 Comment
  RSA249543  Mentzelia crocea Robert F. Thorne, Stan T. Blake 1965-6-4 34759 Fresno Sequoia National Forest: Above King s River along Hwy 180. 1494 Comment
  RSA314603  Mentzelia desertorum Robert F. Thorne, C. W. Tilforth 1973-4-28 43144 San Bernardino 4.4 mi. W of Kelso along Union Pacific Railroad. 671 Comment
  RSA173996  Mentzelia eremophila Robert F. Thorne 1963-5-17 31783 Kern Red Rock Canyon. Comment
  RSA771947  Mentzelia involucrata Robert F. Thorne, C. W. Tilforth 1973-5-30 43583 Riverside Colorado Desert: Mouth of Morongo Valley at N end of Coachella Valley 549 Comment
  RSA336271  Mentzelia involucrata var. megalantha Robert F. Thorne 1978-4-29 52141 Imperial W of Chocolate Mountains: ca. 1 mile E of Coachella Canal and W of Melson Well. Comment
  RSA337841  Mentzelia montana Robert F. Thorne, C. W. Tilforth, John Little 1979-6-14 53068 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end on S side, W of Big Bear City. 2058 Comment
  RSA173993  Mentzelia obscura Robert F. Thorne 1963-4-12 32516 San Bernardino About 4 miles ESE of Old Woman Springs, SW edge Mojave Desert. 1067 Comment
  RSA314605  Mentzelia obscura Robert F. Thorne, C. W. Tilforth, A. Shmida, Barry A. Prigge 1978-5-8 51144 San Bernardino Granite Mts: lower end of Bull Canyon, NNW side of Granite Mts, S of Kelso Dunes 762 Comment
  RSA275471  Mentzelia oreophila Robert F. Thorne, Larry E. DeBuhr, Walter Wisura, Barry A. Prigge 1977-6-23 49429 San Bernardino E Mojave Desert, Clark Mountain Range: N side of Clark Mountains, along power line road, c. 2 mi W of junction with Colosseum Road. 1220 Comment
  RSA334602  Mentzelia veatchiana Robert F. Thorne 1978-5-5 51749 San Bernardino Lucerne Valley: 0.3 miles W of Lucerne Valley (2.6 miles W of jct with Cushenbury Grade Road) 950 Comment
  RSA250694  Mentzelia veatchiana Robert F. Thorne, J. P. Simon, John Dourley, H. Caulfield 1970-5-1 39527 Los Angeles Along road to Valyermo ca. 1 mi. E of Pallett Ranch N of Pinyon Ridge; at foot of grade in Shoemaker Canyon in pinyon-juniper woodland. 1402 Comment
  RSA177688  Mesembryanthemum crystallinum R. F. Thorne, P. Everett 1965-5-11 34571 Los Angeles Base of rocky bluff behind N beach of Little Harbor, Santa Catalina Island Comment
  RSA303719  Mesembryanthemum nodiflorum R. F. Thorne, C. W. Tilforth, et al. 52427 Ventura San Nicolas Island. Sandy bluffs W. of Sand Spit at E. end of island. Comment
  SD123477  Micranthes oregana Robert F. Thorne 1974-7-31 44908 El Dorado Grass Lake at Luthers Pass: floating bog 2362 Comment
  RSA362021  Micropus californicus R. F. Thorne 1976-4-15 47610 Santa Barbara Santa Cruz Island. Cascada Canyon, tributary to the Central Valley, ca. 2 mi. WNW of laboratory, rocky canyon slopes. 229 Comment
  UCR60713  Micropus californicus var. californicus R. F. Thorne 1973-5-23 43870 Riverside Peninsular Range; Santa Ana Mtns., Santa Rosa Plateau, Mesa de Colorado 610 Comment
  RSA188034  Microseris douglasii subsp. platycarpha R. F. Thorne 1966-4-29 36302 Los Angeles Catalina Island. Along Airport Road before turn-off to Middle Ranch Canyon. 457 Comment
  SBBG31051  Microseris douglasii subsp. platycarpha R. F. Thorne 1966-4-29 36302 Los Angeles Airport Rd before turnoff to Middle Ranch Cyn 457 Comment
  RSA251379  Microseris heterocarpa R. F. Thorne 1966-4-16 36053 Los Angeles San Clemente Island: c. 1/2 mile SSE of Eel Point, SW side of island 2 Comment
  RSA188032  Microseris lindleyi R. F. Thorne 1966-4-30 36346 Los Angeles Santa Catalina Island: mouth of Gallagher's Canyon. 8 Comment
  RSA296297  Mimulus androsaceus Robert F. Thorne, C. W. Tilforth, John Little 1979-6-14 53080 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end on S side, W of Big Bear City. 2058 Comment
  RSA250689  Mimulus aurantiacus Robert F. Thorne 1971-4-2 41432 Los Angeles Johnson's Pasture's, N. of Mountain Avenue, Claremont. 549 Comment
  RSA339631  Mimulus aurantiacus Robert F. Thorne, M. Z. Thorne 1980-3-23 54009 Los Angeles Johnson's Pasture, above Claremont. 610 Comment
  RSA284073  Mimulus aurantiacus var. parviflorus Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-28 48889 Santa Barbara Santa Rosa Island. Windmill canyon behind ranch buildings, W of Beechers Bay. 15 Comment
  RSA760087  Mimulus bigelovii Robert F. Thorne, Walter Wisura, B. Busenberg, R. K. Benjamin 1983-5-9 55685 Inyo Death Valley Nat'l Monument, Funeral Mountains, Keane Wonder Springs. 1189 Comment
  RSA334703  Mimulus bigelovii var. bigelovii Robert F. Thorne, Avi Shmida 1978-5-5 51798 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  RSA757455  Mimulus brevipes Robert F. Thorne, Walter Wisura, Dave Mitchener 1982-1 55188 Riverside Cleveland National Forest, along Main Divide Truck Road 915 Comment
  RSA188347  Mimulus floribundus Robert F. Thorne, M. Z. Thorne 1966-5-1 36414 Los Angeles Santa Catalina Island: Fern Canyon near stream W of Orizaba Mountain 229 Comment
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Jan 18 2016
  RSA191265  Mimulus floribundus Robert F. Thorne, Percy C. Everett 1967-6-7 36931 Tulare Sequoia National Forest: Middle Fork of Tule River at Coffee Creek Campground. 549 Comment
  UC1349310  Mimulus floribundus Robert F. Thorne and M. Z. Thorne 1966-8-29 36572 Los Angeles ca. 3 mi s Coldbrook Campground (along branch of and along main stream of North Fork of San Gabriel River); San Gabriel Mts., Angeles National Forest 670 Comment
  RSA252927  Mimulus fremontii var. fremontii Robert F. Thorne, C. W. Tilforth 1973-4-20 43042 Los Angeles San Gabriel Mts., Mojave Desert slopes: 3.2 miles S of Hwy 138 along Grandview Canyon Rd. 1280 Comment
  UC1929946  Mimulus inconspicuus Robert F. Thorne, C. W. Tilforth 1971-5-24 39581 Fresno FOOTHILLS OF SIERRA NEVADA: ca. 2 miles beyond turn-off to Maxon Road. Comment
  RSA225837  Mimulus pilosus Robert F. Thorne, C. W. Tilforth, John Dourley, J. Benny 1971-7-7 40913 San Bernardino San Gabriel Mountains, San Bernardino National Forest: near San Sevaine Cow Camp 1433 Comment
  RSA250359  Mimulus pilosus Robert F. Thorne, John Dourley, R. Scoggin 1972-8-11 42216 Los Angeles San Gabriel Mountains, Angeles National Forest: Mt. Waterman, along trail above upper end of ski lift. 2378 Comment
  RSA356647  Mimulus pilosus Robert F. Thorne, C. W. Tilforth, Larry E. DeBuhr, E. Lathrop 1975-8-29 47301 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro. 610 Comment
  UC1478655  Mimulus primuloides Robert F. Thorne 1974-7-31 44918 El Dorado Grass Lake Luthers Pass 2362 Comment
  UCR48218  Mimulus primuloides R. F. Thorne, Larry E. DeBuhr 1975-8-23 47234 El Dorado Sierra Nevada Mtns, Grass Lake, just north of Luther Pass 2348 Comment
  UC1929945  Mimulus rubellus R. F. Thorne, C. W. Tilforth 1973-6-21 44099 San Bernardino E. MOJAVE DESERT, NEW YORK MTS.: W branch of Fourth of July Canyon. Comment
  UCR40158  Mimulus suksdorfii R. F. Thorne, C. W. Tilforth, John Little 1979-6-14 53081 San Bernardino San Bernardino Mtns., margin of Big Bear Lake at east end on s side [west?] of Big Bear City 2058 Comment
  RSA305427  Minuartia douglasii R. F. Thorne, John Dourley, Walter Wisura 1979-4-23 52474 Santa Barbara Santa Cruz Island. North of Red Peak, toward Pelican Bay 213 Comment
  RSA342752  Minuartia douglasii R. F. Thorne, Christopher Davidson 1978-6-18 52289 San Bernardino Baldwin Lake: W end of lake, 0.3 miles E of Big Bear City limits (18.5 miles S of Lucerne Valley on Highway 18). 2043 Comment
  UCR255942  Mirabilis alipes R. F. Thorne, Mary DeDecker, P. DeDecker, M. Z. Thorne 1976-5-13 s.n. Inyo Northern Mojave Desert, east of [intersection of] Hwy 395 and Westgard Pass road [Route 168] 1829 Comment
  CAS-BOT-BC434824  Mirabilis laevis var. retrorsa Robert F. Thorne 1964-5-3 33848 Riverside Near hwy ca 4 miles S of Morongo Valley and 3 miles S of San Bernardino Co. line. Comment
  RSA314456  Mirabilis laevis var. retrorsa Robert F. Thorne, Dr. Fosberg, Sachet, Herbst 1983-4-23 55463 Riverside San Bernardino Mountains: side canyon on W side of Whitewater Canyon, ca. 3.3 miles N of Whitewater post office. 595 Comment
  RSA239882  Mohavea breviflora Robert F. Thorne, C. W. Tilforth 1973-3-8 42488 Inyo Death Valley National Monument: c. 1/4 mi N of Beatty Jct. -46 Comment
  RSA167529  Mohavea confertiflora Robert F. Thorne, R. Rutherford 1964-4-11 33621 Imperial Araz Wash, between Pasadena and Stud Mountains, Cargo Muchacho Mountains. 305 Comment
  UCD86112  Monanthochloe littoralis Robert F. Thorne; P. Everett 1965-5-11 34535 Los Angeles Santa Catalina Island. Salt flat inside Ballast Point on E side of Catalina Harbor. Comment
  UCR143081  Monardella australis subsp. australis R. F. Thorne, Christopher Davidson, W. Wisura, T. P. Krantz 1977-7-21 49922 San Bernardino San Bernardino Mtns., San Gorgonio Wilderness: Summit Ridge Trail between San Bernardino East and West Peaks 3171 Comment
  SD245396  Monardella lanceolata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49544 Riverside Santa Ana Mountains: along Ortega Highway (74), perhaps 1/4 mile west of El Cariso. Comment
  RSA364137  Monardella linoides subsp. erecta Robert F. Thorne, Larry E. DeBuhr, C Davidson, C. W. Tilforth 1976-7-15 47632 San Bernardino San Bernardino National forest, ca. 1.5 mi. SE of Rebel Ridge, W of Sawmill Canyon. 2165 Comment
  RSA250442  Monardella linoides subsp. stricta Robert F. Thorne 1967-10-3 37269 San Bernardino Mt. Baden-Powell: N slope at Vincent Gap 2134 Comment
  SD123506  Monardella odoratissima subsp. glauca Robert F. Thorne 1974-7-30 45041 Sierra Tahoe National Forest: Goose, Haven, and Snag Lake areas. 2057 Comment
  RSA226097  Monardella viridis subsp. saxicola Robert F. Thorne, C. W. Tilforth, John Dourley, J. Benny 1971-7-7 40867 San Bernardino San Gabriel Mountains, San Bernardino National Forest: along San Sevaine Road from Lytle Creek 1067 Comment
  RSA233520  Monardella viridis subsp. saxicola Robert F. Thorne, C. W. Tilforth 1972-6-29 42145 San Bernardino along San Sevaine Road 1.8 mi. from Lytle Creek Rd 1098 Comment
  RSA0024780  Monoptilon bellioides R. F. Thorne, Carol Annable, R. K. Benjamin, Bonnie Busenberg, Mary DeDecker, Paul DeDecker, Wesley Niles, Paul Peterson 1983-5-9 55655 Inyo Death Valley Nat'l Monument, Funeral Mountains NE of Hells Gate, jct of Beatty Rd and gravel rd to Chloride Cliff. 1037 Comment
  UC1922023  Monoptilon bellioides Robert F. Thorne, M. Z. Thorne 1973-3-30 42677 Riverside MORONGO VALLEY CANYON: Near mouth at junction of roads to Morongo Valley and Desert Hot Springs, on rocky and sandy outwash of Mission Creek. Comment
  UCR36123  Montia fontana R. F. Thorne, W. Wisura, John Dourley 1982-6-18 55025 San Bernardino San Bernardino Mountains, west end of Baldwin Lake, just east of Pan Hot Springs 2050 Comment
  RSA333668  Montia linearis R. F. Thorne, Barry A. Prigge, C. W. Tilforth 1980-6-2 54352 San Bernardino Arrastre Flat, E of Holcomb Valley, pavement plain and moist swale 2284 Comment
  RSA314523  Mortonia utahensis R. F. Thorne 1983-5-6 55555 Inyo Death Valley Nat'l Monument, Funeral Mtns, upper end of Red Amphitheatre, at mouth of canyon, perhaps 1.5 miles up cyn 1073 Comment
  UCR48180  Mucronea californica R. F. Thorne 1968-6-7 37782 San Luis Obispo Central Coast, Jack Lake: about 3 mi. south of Oceano 15 Comment
  RSA250507  Muhlenbergia asperifolia R. F. Thorne 1967-10-10 37383 Los Angeles San Gabriel Mountains, Angeles National Forest: Yucca Flats Summer Housing Tract. 1250 Comment
  LA103783  Muhlenbergia filiformis Robert F. Thorne; C. W. Tilforth 1979-7-13 53456 San Bernardino Green Valley Lake 2110 Comment
  RSA754606  Muhlenbergia microsperma R. F. Thorne 1980-4-27 54148 Los Angeles Santa Catalina Island. From Blackjack Camp into Cape Canyon Comment
  RSA337807  Muhlenbergia richardsonis R. F. Thorne, C. W. Tilforth, J. Little 1979-6-14 53077 San Bernardino San Bernardino Mountains: Margin of Big Bear Lake at E end, on S side, W of Big Bear City 2058 Comment
  RSA247936  Muilla coronata Robert F. Thorne 1973-4-29 43338 San Bernardino New York Mountains; 1 mile N on road to Hard Cash Mine in Caruthers Canyon, 13 airmiles E of Cima. 1738 Comment
  RSA336036  Muilla maritima Robert F. Thorne, A. Shmida, R. Whittaker 1978-4-23 52067 Riverside Palms to Pines Highway: Along highway, Santa Rosa Mountains. Comment
  CAS-BOT-BC515628  Muilla maritima Robert F. Thorne; M. Z. Thorne 1967-7-2 37215 San Bernardino San Gabriel Moutains, San Antonio Canyon: Chapman Ranch above Mt. Baldy Village Comment
  SD90271  Munzothamnus blairii Robert F. Thorne 1973-4-11 42834 Los Angeles San Clemente Island; uppeer part of Norton Canyon. 274 Comment
  UCR77693  Myriophyllum hippuroides R. F. Thorne, Larry E. DeBuhr 1975-8-15 46827 Lake Coast Range, Boggs Lake, west of Mt. Hanah, c. 7.5 mi SSE of Kelseyville and 3 mi NNW of Glenbrook Resort 856 Comment
  RSA281036  Myriophyllum verticillatum Robert F. Thorne, M. Z. Thorne, M. DeDecker 1969-7-21 38717 Inyo Owens Valley: Locust Ditch. 1143 Comment
  RSA370857  Najas marina Robert F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61235 San Diego De Luz Canyon: Along De Luz Creek and near small reservoir, not far from junction of Cottonwood Canyon and De Luz-Murrieta roads 140 Comment
  RSA357786  Nama demissa Robert F. Thorne, M. Z. Thorne 1973-3-30 42678 Riverside Morongo Valley Canyon: Near mouth at junction of roads to Morongo Valley and Desert Hot Springs, Mission Creek. 488 Comment
  RSA252915  Nama demissa var. demissa Robert F. Thorne, C. W. Tilforth 1973-4-20 43056 Los Angeles San Gabriel Mts., Mojave Desert slopes: 3.2 miles S of Hwy 138 along Grandview Canyon Rd. 1280 Comment
  RSA281035  Nama rothrockii Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38822 Inyo Sierra Nevada, E Slope, Onion Valley. 2759 Comment
  RSA337858  Nama rothrockii Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53200 San Bernardino Holcomb Valley; along Holcomb Creek below Hitchock Ranch, where 3N12 crosses the creek. 2180 Comment
  RSA286896  Nassella cernua R. F. Thorne, G. Wallace, M. Hoefs 1977-4-28 48942 Santa Barbara Santa Rosa Island. NE slope of Black Mountain in one of headwaters canyons of Upper Windmill Creek. 274 Comment
  RSA309661  Nassella cernua R. F. Thorne, B. Prigge 1979-5-10 52790 San Bernardino Along Crowder Creek 1 mile east of Cajon Junction on I-15. 976 Comment
  RSA279058  Nassella lepida R. F. Thorne 1971-4-23 41486 Los Angeles Angeles National Forest; NE of Chantry Flats along Santa Anita Creek. 549 Comment
  RSA332354  Nassella lepida R. F. Thorne 1984-5-6 58424 Santa Barbara Santa Cruz Island. Prisoner' s Harbor, area about the Waterfalls and adjacent Central Valley 229 Comment
  RSA791727  Nasturtium officinale R. F. Thorne 1995-3-29 63019 Riverside White Water Canyon 600 Comment
  RSA555453  Navarretia atractyloides R. F. Thorne 1966-4-30 36356 Los Angeles Santa Catalina Island; Grassy slope above Gallagher's Canyon 427 Comment
  SBBG31335  Navarretia hamata R. F. Thorne 1966-4-6 Los Angeles old quarry W of Empire Landing 91 Comment
  SBBG31427  Navarretia hamata R. F. Thorne with P. C. Everett 1965-6-24 35025 Los Angeles Rancho Escondido, Escondido Cyn 213 Comment
  RSA187831  Navarretia hamata subsp. leptantha R. F. Thorne 1966-4-7 25939 Los Angeles Santa Catalina Island: Cherry Valley. 61 Comment
  RSA337401  Navarretia peninsularis R. F. Thorne, Davidson 1978-6-18 52281 San Bernardino Baldwin Lake: W end of lake, 0.3 miles E of Big Bear City limits (18.5 miles S of Lucerne Valley on Highway 18). 2043 Comment
  UC1532793  Navarretia prostrata Robert F. Thorne and Earl Lathrop 1975-5-25 45563 Riverside Mesa de Burro Santa Rosa Plateau, Rancho California 609 Comment
  SEINET10464855  Nemacladus glanduliferus var. orientalis Thorne 1978-5-10 THORNE 51353 San Bernardino Northeast San Bernardino Co., East Mojave Desert, Mesquite Mts.: Winter's Pass 1067 Comment
  RSA252945  Nemacladus longiflorus var. breviflorus R. F. Thorne, Gary D. Wallace 1973-4-24 43421 Los Angeles Junction of Pallett Creek and Longview Roads: ca. 4 mi S of Pearblossom. 1174 Comment
  UC1531163  Nemacladus longiflorus var. breviflorus Robert F. Thorne, B. Prigge and C. W. Tilforth Jun 2 1980-Jun 3 1980 54299 San Bernardino 5.2 mi n Silverwood Lake road junction with Hesperia road (s of Hesperia, near Mojave River); San Bernardino Mts. 975 Comment
  SEINET10972540  Nemacladus longiflorus var. breviflorus Thorne 1980-6-2 THORNE 54299 San Bernardino San Bernardino Mountains, near Mojave River, south of Hesperia and 5.2 miles north of junction of Silverwood Lake and Hesperia roads 975 Comment
  HSC65799  Nemacladus orientalis R. F. Thorne, C. W. Tilforth, A. Shmida, et al. 1978-5-10 51380 San Bernardino E Mojave Desert, Mesquite Mountains, Winter's Pass. 1098 Comment
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May 4 2012
  RSA239899  Nemacladus orientalis R. F. Thorne, C. W. Tilforth, et al. 1973-3-8 42561 Inyo Death Valley National Monument: At Jubilee Pass. 402 Comment
  SD181625  Nemacladus orientalis Robert f. Thorne, C. W. Tilforth 1973-6-1 43750 San Bernardino Kingston Mountains; 2.0 miles eastnortheast of Horsethief Springs near Blackwater Mine. 1280 Comment
  RSA639030  Nemacladus rubescens R. F. Thorne, C. W. Tilforth 1973-4-28 43139 San Bernardino Kelso, just N of U.P.R.R. building 671 Comment
  SEINET10840514  Nemacladus rubescens Thorne 1973-3-10 THORNE 42640 San Bernardino Mojave Desert, 4.5 miles south of Ibex Pass on Inyo-San Bernardino County line 305 Comment
  RSA342754  Nemacladus sigmoideus R. F. Thorne, Christopher Davidson 1978-6-18 52284 San Bernardino Baldwin Lake: W end of lake, 0.3 miles E of Big Bear City limits (18.5 miles S of Lucerne Valley on Highway 18). 2043 Comment
  UCR222459  Nemacladus sigmoideus R. F. Thorne, C. W. Tilforth, Christopher Davidson, B. A. Prigge 1979-5-22 53034 San Bernardino Southcentral Mojave Desert, along township road c. 1 mi south of Lucerne Valley hwy, and c. 1 mi SW of S end of Rabbit Dry lake 907 Comment
  SEINET10460936  Nemacladus sigmoideus Thorne 1973-5-11 THORNE 43511 Los Angeles San Gabriel Mountains: Dry ridge north of Shoemaker Canyon between Mile High and Valyermo 1341 Comment
  RSA754914  Nemophila menziesii Robert F. Thorne 1995-4-25 62973 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area. 1067 Comment
  RSA279295  Nemophila menziesii var. integrifolia Robert F. Thorne, Jim Henrickson 1975-5-3 45439 San Bernardino E End Granite Mts.: Snake Spring. 1220 Comment
  RSA309677  Nemophila menziesii var. integrifolia Robert F. Thorne 1979-5-10 52848 San Bernardino San Bernardino Mountains: Silverwood Lake Recreational Park on SW bay of lake. 1037 Comment
  UC1375274  Nemophila menziesii var. integrifolia Robert F. Thorne 1971-6-5 39839 San Bernardino San Sevaine Cow Camp San Bernardino National Forest, San Gabriel Mts. (San Gabriel Mts.) 1417 Comment
  UC1400331  Nemophila menziesii var. integrifolia Mae Z. Thorne 1971-6-9 40968 San Bernardino Cucamonga Canyon along truck trail San Bernardino National Forest, San Gabriel Mts. 792 Comment
  UC1518667  Nemophila menziesii var. integrifolia Robert F. Thorne and Barry Prigge 1979-5-10 52871 San Bernardino near junction of Grass Valley Creek and Mojave River; near junction of Grass Valley Creek and Mojave River 975 Comment
  RSA316233  Nicolletia occidentalis R. F. Thorne 1981-6-4 54924 San Bernardino San Bernardino Mountains; Along Mojave River, about 4 miles south of Hesperia and about 7 miles north of Cedar Springs Dam. 890 Comment
  RSA339360  Nicolletia occidentalis R. F. Thorne, Rolf, Gertrud Dahlgren 1979-8-22 53587 Riverside Joshua Tree National Monument; Vicinity of Ryan Campground to base of Ryan Mountain. 1319 Comment
  UCR136960  Nicotiana attenuata R. F. Thorne, Christopher Davidson, W. Wisura, T. P. Krantz 1977-7-21 49953 San Bernardino San Bernardino Mtns., San Gorgonio Wilderness: along San Bernardino Peak Divide Trail west of Manzanita Springs 2439 Comment
  RSA0013788  Nuphar lutea subsp. polysepala R. F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42309 Plumas Plumas National Forest: Snake Lake, ca. 4 miles NW of Quincy. 1220 Comment
  UC1348861  Nuttallanthus texanus Robert F. Thorne 1966-4-29 36277 Los Angeles Santa Catalina Island, Middle Ranch Canyon, Middle Ranch Middle Ranch Canyon; Santa Catalina Island, , Middle Ranch 213 Comment
  RSA246753  Oenanthe sarmentosa R. F. Thorne, P. Everett 1965-8-7 35212 Humboldt Samoa Peninsula: near sea level Comment
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Oct 29 2021
  RSA246755  Oenanthe sarmentosa R. F. Thorne, P. Everett 1965-8-9 35318 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC65729  Oenothera cespitosa subsp. marginata R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-13 49300 San Bernardino E Mojave Desert, New York Mtns., Caruthers Canyon 1738 Comment
  RSA191086  Oenothera elata subsp. hirsutissima Robert F. Thorne 1967-7-2 37213 San Bernardino San Gabriel Mts., San Antonio Canyon: Chapman Ranch above Mt. Baldy Village. 1357 Comment
  RSA226669  Oenothera elata subsp. hirsutissima Robert F. Thorne, John Dourley, Selwyn Everist 1971-8-4 41209 Mono Inyo National Forest: ca. 1/2 mile above Hot Springs in Hot Creek 2125 Comment
  RSA275178  Oligomeris linifolia Robert F. Thorne, Walter Wisura, C. Davidson 1977-5-29 49277 San Bernardino Kelso Dunes: east of dunes, c. 4 miles south of Kelso on Kel-Baker Road 732 Comment
  UCR60727  Oligomeris linifolia R. F. Thorne 1978-4-29 52100 Imperial Sonoran (Colorado) Desert, along Hwy 86 near entrance to Salton Sea Naval Base, SSW of Salton Sea -41 Comment
  SD90415  Orcuttia californica R. F. Thorne, E. Lathrop 1969-5-19 37971 Riverside Santa Rosa Plateau: Rancho California, Mesa de Colorado, small vernal marsh NW of large vernal marsh 625 Comment
  UC1532824  Orcuttia californica Robert F. Thorne, C. W. Tilforth, L. DeBuhr and E. Lathrop 1975-8-29 47312 Riverside Mesa de Burro Santa Rosa Plateau, Rancho California 609 Comment
  UCSB56475  Orcuttia californica Robert F. Thorne, C. W. Tilforth, L. DeBuhr and E. Lathrop 1975-8-29 47300 Riverside collected in Rancho California at E-side of La Mesa del Burro Mesa del Burro 609 Comment
  RSA188563  Oreonana vestita R. F. Thorne 1965-8-30 35447 San Bernardino Angeles National Forest, just below Ontario Peak 2607 Comment
  RSA771416  Orobanche californica subsp. feudgei Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47633 San Bernardino San Bernardino National forest, ca. 1.5 mi. SE of Rebel Ridge, W of Sawmill Canyon. 2165 Comment
  RSA0078636  Orobanche californica subsp. feudgei Robert F. Thorne 1969-7-2 38299 Los Angeles San Gabriel Mts., Angeles National Forest: Along Angeles Crest Hwy. 3.2 miles WSW of Cloudburst Summit. 1981 Comment
  UC1523631  Orobanche cooperi Robert F. Thorne, Steve Boyd, et al. 1986-3-21 61614 Imperial 6.5 mi se of Coyote Wells (on Route 98, Yuha Desert,); Yuha Desert, Route 98 45 Comment
  RSA250334  Orobanche fasciculata Robert F. Thorne, Larry E. DeBuhr 1972-8-18 42254 Los Angeles San Gabriel Mts; Angeles National Forest: open peak of Mt. Islip 2515 Comment
  RSA0076151  Orobanche fasciculata Robert F. Thorne, Christopher Davidson, Walter Wisura, Barry Prigge 1977-5-28 49228 San Bernardino E. Mojave Desert, New York Mts.: Keystone Canyon. 1767 Comment
  SD69676  Orobanche parishii subsp. brachyloba Robert Thorne, P. Everett 1965-6-23 34932 Los Angeles Santa Catalina Island; Ben Weston Beach, west side of island, ca. 10', low sandy flat behind dunes, in sun (mak 10/07) Comment
  RSA177981  Orthocarpus faucibarbatus Robert F. Thorne 1965-4-19 34308 Sonoma Guerneville Hwy, 1 mile E of Laguna Road; ca 4 miles W of Santa Rosa. 46 Comment
  GH346935  Osmaronia cerasiformis R. F. Thorne & P. Everett 1967-6-8 37000 Unknown Sequoia National Forest: 7.5 miles NE of Milo on Balch Park Road Comment
  RSA249513  Osmorhiza berteroi R. F. Thorne, P. Everett 1965-8-5 35129 Humboldt Wailaki Recreation site. 518 Comment
  RSA191357  Osmorhiza berteroi R. F. Thorne, M. Z. Thorne 1967-7-19 37190 Los Angeles San Gabriel Mountains. 1981 Comment
  RSA170027  Oxalis oregana Robert F. Thorne, Percy C. Everett 1964-10-20 34249 Mendocino Redwood Forest, 2.2 miles up Navarro River Valley from Hwy 1. Comment
  RSA118116  Oxalis pes-caprae Robert F. Thorne, Percy C. Everett 1965-6-23 34986 Los Angeles Santa Catalina Island. At base of rocky bluff between Avalon Casino and St. Catherine Hotel 8 Comment
  RSA314718  Oxypolis occidentalis R. F. Thorne, Tim Krantz, Phil Pack, Mae Thorne 1982-9-10 55306 San Bernardino San Bernardino National Forest: South Fork Meadows of Santa Ana River & adjacent forest, San Gorgonio Wilderness area, from Poop-Out Hill parking lot along Flume Trail through meadows, and back along Pack Trail 2378 Comment
  RSA250332  Oxytheca parishii var. parishii Robert F. Thorne, Larry E. DeBuhr 1972-8-18 42257 Los Angeles San Gabriel Mts., Angeles National Forest: ridge running E from peak of Mt. Islip. 2409 Comment
  RSA250515  Oxytheca parishii var. parishii Robert F. Thorne, John Dourley 1967-10-10 37373 Los Angeles San Gabriel Mts., Angeles National Forest: 1.5 mi. SW of Dawson Saddle. 2302 Comment
  UC1375410  Oxytheca parishii var. parishii Robert F. Thorne 1969-7-2 38329 Los Angeles near Islip Saddle (on Angeles Crest Hwy, at Jarvis Memorial Vista); San Gabriel Mts., Angeles National Forest 2057 Comment
  UCR222308  Oxytheca trilobata R. F. Thorne, W. Wisura, David Michener 1982-5-24 55191 Riverside Peninsular Ranges; Santa Ana Mountains, Cleveland National Forest, [north] along Main Divide Truck Road [from El Cariso Fire Station area] 915 Comment
  RSA283106  Oxytropis oreophila R. F. Thorne, Davidson, Walter Wisura, Krantz, Lois Goodman 1977-7-20 49867 San Bernardino San Gorgonio Wilderness; San Gorgonio Mountain just W of summit along Summit Ridge Trail 3460 Comment
  SD117489  Oxytropis oreophila Robert F. Thorne, C. Davidson, W. Wisura, T. Krantz, L. Goodman 1977-7-20 49867 San Bernardino San Bernardino Mountains, San Gorgonio Wilderness, San Gorgonio Mountain just west of summit along Summit Ridge Trail on gravelly flat with alpine fell-field cushion 3459 Comment
  HSC80358  Packera bernardina R. F. Thorne, C. W. Tilforth 1979-7-12 53473 San Bernardino San Bernardino National Forest; near Holcomb Creek where crossed by Forest Service Rd. 3N12 below Hitchcock Ranch in Holcomb Valley. 2180 Comment
  RSA0013849  Packera breweri R. F. Thorne, Percy C. Everett 1963-4-20 31577 Monterey 13.4 miles SSE of Jolon. 335 Comment
  RSA0020861  Packera cana R. F. Thorne, James Henrickson 1963-8-10 33089 Mono Toiyabe National Forest; 1.3 miles beyond Sardine Creek meadow and 1 mile E of Sonora Pass. 2774 Comment
  RSA251035  Packera multilobata R. F. Thorne, C. W. Tilforth 1973-5-30 43620 San Bernardino Eastern Mojave Desert, New York Mountains: upper portion of Caruthers Canyon. 1677 Comment
  RSA275773  Packera multilobata R. F. Thorne, Walter Wisura, Christopher Davidson, B. A. Prigge 1977-5-26 49158 San Bernardino E Mojave Desert, Clark Mtn. Range: Colosseum Rd. c. 2 miles S of power line rd., N side of mts. (See attached map to specimen). 1432 Comment
  RSA279753  Packera multilobata R. F. Thorne, C. W. Tilforth 1974-5-28 44505 San Bernardino East Mojave Desert: Clark Mountains, 1.8 miles up Coliseum Mine Road up from powerline road. 1616 Comment
  RSA233475  Paeonia californica Robert F. Thorne, R. Carolin 1967-3-17 41623 San Bernardino San Gabriel Mts., San Bernardino National Forest: W of mouth of Cucamonga Canyon 640 Comment
  RSA302357  Palafoxia arida var. arida R. F. Thorne 1977-11-26 50913 Imperial North of Pilot Knob near jct. of Sidewinder Rd. and hwy I-8, east of Pilot Knob campground. 67 Comment
  RSA0031107  Panicum R. F. Thorne, S. T. Blake 1965-6-4 34744 Fresno Above King's River Canyon, 4 miles W of Boyden Cave. 1037 Comment
  RSA286654  Panicum acuminatum var. acuminatum R. F. Thorne 1974-6-28 44776 Los Angeles San Gabriel Mountains, Angeles National Forest: Lime Spring, tributary to Coldbrook Creek. 1250 Comment
  RSA550882  Panicum acuminatum var. acuminatum R. F. Thorne, Stan T. Blake 1965-6-4 34744 Fresno Above King's River Canyon, 4 miles W of Boyden Cave. 1037 Comment
  UCD88584  Panicum acuminatum var. fasciculatum Robert F. Thorne; M. Z. Thorne 1967-7-19 37129 Los Angeles San Gabriel Mts. Angeles National Forest. Yucca Flats Summer Home Tract at upper end of Canyon of N. Fork of San Gabriel River. 1249 Comment
  RSA545295  Panicum acuminatum var. lindheimeri R. F. Thorne, Larry E. DeBuhr, et al. 1972-10-13 42456 San Bernardino San Gabriel Mountains: Lone Pine Canyon c. 1 mile NNW of Lost Lake where Lone Pine Canyon Road crosses Lone Pine Creek, 899 Comment
  RSA187833  Papaver somniferum Robert F. Thorne 1966-6-1 36476 Los Angeles Santa Catalina Island, field near small building, in Pebbly Beach Canyon near upper end of road, possibly escaped Comment
  SBBG31056  Parapholis incurva R. F. Thorne with P. C. Everett 1965-5-11 34568 Los Angeles N beach of Little Harbor 1 Comment
  SEINET10596820  Parapholis incurva Thorne 1979-4-3 THORNE 52375 Ventura San Nicolas Island: Bluffs, dunes, & beaches from road to clayey-sandy bluffs and dunes, elev. 40 ft. above bluff to 15 ft at dunes. Mostly in Lycium-Lupinus and Mesembryanthemum communities, with Lupinus albifrons douglasii, Astragalus traskiae, Lomatium insulare, Lotus argophyllus, Coreopsis gigantea, etc. 12 Comment
  RSA314455  Parietaria hespera var. hespera Robert F. Thorne, F. R. Fosberg, Sachet, Herbst 1983-4-23 55462 Riverside San Bernardino Mountains: side canyon on W side of Whitewater Canyon, ca. 3.3 miles N of Whitewater post office. 595 Comment
  RSA187778  Paspalum distichum R. F. Thorne 1966-9-14 36653 Los Angeles Santa Catalina Island: behind Ben Weston Beach 3 Comment
  RSA239966  Pectocarya heterocarpa R. F. Thorne, C. W. Tilforth 1973-3-10 42635 b San Bernardino 4.5 miles S of Ibex Pass on Inyo-San Bernardino County line. 305 Comment
  RSA250126  Pectocarya heterocarpa R. F. Thorne 1973-4-29 43262 San Bernardino 7.5 miles SSW of Cima, 2 miles along road to Marl Mountains (Kelso Peak). 1128 Comment
  SD90373  Pectocarya linearis subsp. ferocula Robert F. Thorne 1966-4-17 36101 Los Angeles San Clemente Island: Desiccated vernal pool on mesa just northwest of Thirst 550 Comment
  RSA251461  Pectocarya linearis subsp. ferocula R. F. Thorne 1973-4-11 42824 Los Angeles San Clemente Island: upper part of Norton Canyon. 335 Comment
  RSA250658  Pectocarya penicillata R. F. Thorne, C. W. Tilforth 1973-4-20 43121 San Bernardino Cajon Canyon, 2 mi NW of Devore 1036 Comment
  UCR228139  Pectocarya penicillata R. F. Thorne 1968-4-4 37476 San Bernardino Transverse Range; San Gabriel Mountains, San Bernardino National Forest, c. 5 miles WNW of Applewhite Campground, near North Fork of Lytle Creek 1555 Comment
  RSA250123  Pectocarya platycarpa R. F. Thorne 1973-4-28 43198 San Bernardino Providence Mountains, canyon below Cornfield Springs, 10.9 road miles SE of Kelso. 1067 Comment
  RSA226022  Pectocarya setosa R. F. Thorne, C. W. Tilforth 1971-6-29 40665 a Los Angeles San Gabriel Mountains, Angeles National Forest: near junction of Angeles Forest & Mt. Emma Roads 1128 Comment
  RSA307373  Pectocarya setosa R. F. Thorne, B. Prigge 1979-5-10 52785 San Bernardino Along Crowder Creek about 1 mi E of Cajon Junction on I-15. 976 Comment
  SD82880  Pedicularis semibarbata Robert F. Thorne, M. Z. Thorne 1969-7-9 38547 Los Angeles San Gabriel Mts., Angeles National Forest: summit of Table Mt. above Big Pines Ranger Station 2133 Comment
  UC1523572  Pedicularis semibarbata Robert F. Thorne, Walter Wisura, Dave Michener and Jim Shevock 1979-9-5 53805 Tulare Moses Mountain, center of large, fourth meadow, along trail to mountain Moses Mountain 2377 Comment
  SD117436  Pellaea breweri Robert F. Thorne, L. DeBuhr & J. Dourley 1974-7-10 44850 Inyo Death Valley National Monument, Panamint Mountains, northwest slope of Bennett Peak on trail to Telescope Peak just S of saddle and Rogers Pk 3045 Comment
  RSA334570  Pellaea mucronata var. mucronata R. F. Thorne, B. Prigge, D. Michener 1978-5-26 51612 San Bernardino Granite Mountains: Upper Bull Canyon. 1341 Comment
  RSA321659  Penstemon centranthifolius Robert F. Thorne, Barry A. Prigge 1979-5-10 52812 San Bernardino Along Crowder Creek 1.5 mi east of Cajon Junction on I-15 976 Comment
  RSA338160  Penstemon eatonii subsp. undosus Robert F. Thorne, C. W. Tilforth 1979-7-13 53535 San Bernardino San Bernardino National Forest, ca 1 1/4 mile N of hwy in Big Bear City. 2134 Comment
  NY592872  Penstemon eatonii var. undosus R. F. Thorne 1973-6-19 43950 San Bernardino East Mojave Desert, Providence Mountains: north end of mountains ca. 7 miles northeast of Kelso (by road), upper Globe Canyon near Globe Mine. 1463.0 Comment
  UCR222284  Penstemon fruticiformis subsp. fruticiformis R. F. Thorne, W. Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55603 Inyo Mojave Desert; North Mojave Desert region, Death Valley National Monument, Funeral Mountains, upper end of Red Ampitheater 976 Comment
  RSA191040  Penstemon grinnellii var. grinnellii Robert F. Thorne 1963-5-15 31689 Los Angeles 1 mile W of Los Angeles Co. line on Route 138, ca. 2 miles W of Desert Springs 1220 Comment
  RSA172239  Penstemon grinnellii var. scrophularioides Robert F. Thorne 1963-7-11 32788 Los Angeles Near junction of road to Upper Shake Campground and Lake Hughes-Gorman road, Angeles National Forest. Comment
  NY601626  Penstemon heterophyllus var. australis R. F. Thorne 1969-6-6 39333 Riverside Santa Rosa Plateau: Rancho California 609.6 Comment
  RSA226345B  Penstemon heterophyllus var. australis Robert F. Thorne, C. W. Tilforth 1971-6-17 39917 Los Angeles 1.4 mile along Placerita Canyon Road beyond Sand Road Junction, W end of San Gabriel Mountains 610 Comment
  UC1478651  Penstemon palmeri var. palmeri Robert F. Thorne, L. Debuhr, and J. Dourley 1974-7-11 44803 Inyo Wildrose Canyon just below Mahogany Flat Campground; Death Valley National Monument, Panamint Mts. 2377 Comment
  NY650491  Penstemon rostriflorus R. F. Thorne 1968-7-27 37820 San Bernardino San Gabriel Mountains, Angeles National Forest: Top of north-facing talus slope at Mount Baldy Notch 2377.4 Comment
  RSA191536  Penstemon rostriflorus Robert F. Thorne 1966-6-20 36557 San Bernardino San Gabriel Mountains, San Bernardino National Forest: talus slopes near upper end of Icehouse Canyon. 2195 Comment
  RSA251068  Penstemon thompsoniae Robert F. Thorne, C. W. Tilforth 1973-5-31 43686 San Bernardino E. Mojave Desert, New York Mts.: Caruthers Canyon, upper end near Hard Cash Mine 1890 Comment
  UCR136944  Penstemon thompsoniae R. F. Thorne, Larry E. DeBuhr, W. Wisura, B. A. Prigge 1977-6-24 49471 San Bernardino Eastern Mojave Desert, Clark Mountain Range: just south of Frank Curtis' mine (Juniper Claims) 1768 Comment
  RSA275572  Penstemon thurberi Robert F. Thorne, C. W. Tilforth, A. Shmida, Barry A. Prigge 1978-5-9 51233 San Bernardino Kelso Dunes: southern edge of Kelso Dunes near Bull Canyon Wash from Granite Mountains. 732 Comment
  RSA0062904  Pentagramma triangularis R. F. Thorne 1966-4-17 36121 Los Angeles San Clemente Island: Rocky, steep upper slopes of Box Canyon, NW of Horse Canyon, SW of Thirst. 244 Comment
  SBBG31203  Pentagramma triangularis subsp. triangularis R. F. Thorne 1966-6-2 36530 Los Angeles Hay Press area [Haypress] 426 Comment
  SBBG101569  Pentagramma triangularis subsp. viscosa R. F. Thorne with C. W. Tilforth 1976-4-13 47466 Santa Barbara ca. 0.5 mi WSW of UC Field Station 213 Comment
  GH395212  Perideridia parishii R. F. Thorne & W. Wisura 1977-9-17 50788 Unknown San Jacinto Mountain: Long Valley to Round Valley along trail to summit Comment
  RSA252911  Perideridia pringlei R. F. Thorne 1973-5-11 43574 Los Angeles along Mt. Emma Road, 10 mi. W of Little Rock Creek below the dam 1036 Comment
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Jul 14 2014
  RSA188050  Perityle emoryi R. F. Thorne 1966-4-4 35754 Los Angeles Santa Catalina Island. SW-facing bluff SE of Ballast Point and Catalina Harbor, Isthmus 91 Comment
  RSA302488  Perityle emoryi R. F. Thorne 1977-11-25 50888 Imperial 15 miles N of Yuma along Picacho Rd. (perhaps Senator wash) 61 Comment
  UC1478798  Perityle emoryi Robert F. Thorne, C. W. Tilforth, A. Shmida, B. Prigge, et al. 1978-5-8 51153 San Bernardino lower end Bull Canyon (s of Kelso Dunes); Mojave Desert, nnw side Granite Mts. 762 Comment
  RSA356895  Petalonyx thurberi Robert F. Thorne 1966-10-15 41785 Riverside Dead Indian Canyon: Near Palm Desert at foot of Palms to Pines Highway. Comment
  RSA275750  Petrophytum caespitosum Robert F. Thorne, Walter Wisura, Christopher Davidson, Barry A. Prigge 1977-5-26 49188 San Bernardino E. Mojave Desert. Clark Mtn Range. Fir Canyon 1829 Comment
  CAS-BOT-BC326769  Peucephyllum schottii Robert F. Thorne 1963-3-29 32441 Riverside South side of Eagle Mountains near pumping station of Metropolitan Water District about 12 miles west of Desert Center Comment
  RSA251988  Phacelia ambigua Robert F. Thorne, C. W. Tilforth 1973-5-31 43730 San Bernardino E Mojave Desert, N. slope New York Mountains: c. 0.5 mile N of Vanderbilt. 1220 Comment
  RSA314539  Phacelia ambigua Robert F. Thorne 1983-5-6 55534 Inyo Death Valley Nat'l Monument, Funeral Mtns, upper end of Red Amphitheatre, at mouth of canyon, perhaps 1.5 miles up cyn 1073 Comment
  RSA348935  Phacelia ambigua Robert F. Thorne, R. Rutherford 1964-4-11 33646 Imperial Araz Wash, between Pasadena and Stud Mountains, Cargo Muchacho Mountains. 305 Comment
  RSA348936  Phacelia ambigua Robert F. Thorne, P. Everett 1964-4-18 33826 Inyo 4.6 miles E of Death Valley National Monument boundary near Salsberry Pass. 915 Comment
  RSA247050  Phacelia cryptantha Robert F. Thorne, C. W. Tilforth 1973-6-20 44043 San Bernardino Providence Mountains: Mitchell Caverns State Park, large canyon N & W of park headquarters 1341 Comment
  RSA315551  Phacelia cryptantha Robert F. Thorne, Mrs. Raymond Fosberg, M. H. Sachet, Derral Herbst 1983-4-23 55464 Riverside San Bernardino Mountains: side canyon on W side of Whitewater Canyon, ca. 3.3 miles N of Whitewater post office. 595 Comment
  RSA349047  Phacelia cryptantha Robert F. Thorne, A. Shmida 1978-5-5 51867 San Bernardino Cushenbury Canyon: San Bernardino Mountains. 1450 Comment
  UCR60507  Phacelia cryptantha R. F. Thorne 1973-4-28 43225 San Bernardino Eastern Mojave Desert, Providence Mountains, canyon above Cornfield Springs 1220 Comment
  HSC24468  Phacelia curvipes R. F. Thorne, M. Z. Thorne 1969-7-9 38514 Los Angeles San Gabriel Mtns., Angeles National Forest, on summit of Table Mtn. 2134 Comment
  RSA191064  Phacelia davidsonii Robert F. Thorne, M. Z. Thorne 1967-7-2 37246 San Bernardino Angeles National Forest: above Baldy Village, San Antonio Canyon. 1357 Comment
  RSA229160  Phacelia davidsonii Robert F. Thorne 1971-6-30 40762 Los Angeles Angeles National Forest: c. 0.3 mile below Alder Saddle along a dry branch of the S Fork of Little Rock Creek. 1616 Comment
  UC1375272  Phacelia davidsonii Robert F. Thorne 1971-6-5 39826 San Bernardino San Sevaline Cow Camp San Gabriel Mts., San Bernardino National Forest 1432 Comment
  UC1400333  Phacelia davidsonii Robert F. Thorne 1969-5-29 37996 San Bernardino above Baldy Village; San Gabriel Mts., Angeles National Forest, San Antonio Canyo 1359 Comment
  UCD120373  Phacelia davidsonii Robert F. Thorne; M. Z. Thorne 1967-7-2 37222 San Bernardino San Gabriel Mts., San Antonio Canyon: Chapman Ranch above Mt. Baldy Village. 1356 Comment
  RSA225733  Phacelia distans Robert F. Thorne 1971-5-22 39736 b Los Angeles Fish Canyon. 305 Comment
  RSA305614  Phacelia distans Robert F. Thorne, John Dourley, Walter Wisura 1979-4-24 52542 Santa Barbara Santa Cruz Island: Fraser Point northwest tip of island. 15 Comment
  RSA348920  Phacelia distans Robert F. Thorne 1963-3-29 32403 Riverside Ca. 7-8 miles E of Mecca, Mecca Hills. 152 Comment
  RSA754912  Phacelia distans Robert F. Thorne 1995-4-25 62975 San Bernardino East of hwy. I-15 and Cajon Pass, via hwy. 138, Elliott's Ranch area. 1067 Comment
  SD124120  Phacelia distans Robert F. Thorne, C. W. Tilforth, et al. 1979-4-30 52660 Santa Barbara San Miguel Island; along sandy slopes west of Ranger Station. 121 Comment
  SD90555  Phacelia distans Robert F. Thorne 1973-4-12 42953 Los Angeles San Clemente Island: Pyramid Cove at south end of island. 3 Comment
  UC1606942  Phacelia douglasii Robert F. Thorne and P. Everett 1963-4-18 31482 San Luis Obispo ca 4 mi s Cholame 487 Comment
  RSA247987  Phacelia fremontii Robert F. Thorne 1973-4-29 43283 San Bernardino Near junction of Union Pacific RR & road to Cedar Canyon. 1174 Comment
  RSA342245  Phacelia frigida subsp. frigida Robert F. Thorne, James Henrickson 1963-8-10 33109 Mono 1.3 miles beyond Sardine Creek meadow, ca. 1 mile east of Sonora Pass, Toiyabe National Forest. 2866 Comment
  RSA342246  Phacelia frigida subsp. frigida Robert F. Thorne, James Henrickson 1963-8-9 32986 Mono Nine miles west of Sonora Junction, Toiyabe National Forest. 2713 Comment
  UC1349294  Phacelia imbricata Robert F. Thorne and P. Everett 1967-6-9 37050 Tulare ca 5 mi nne Kaweah; N Fork of Kaweah River 914 Comment
  RSA230266  Phacelia imbricata subsp. patula Robert F. Thorne 1969-7-2 38306 Los Angeles San Gabriel Mountains, Angeles National Forest: Angeles Crest Highway, 3.2 miles WSW of Cloudburst Summit. 1982 Comment
  RSA275568  Phacelia lemmonii Robert F. Thorne, C. W. Tilforth, A. Shmida 1978-5-9 51271 San Bernardino Granite Mountains; Coyote Springs (NE corner of range). 976 Comment
  UC1531182  Phacelia lemmonii Robert F. Thorne, B. Prigge, and D. Michener 1978-5-26 51619 San Bernardino upper Bull Canyon Granite Mountains (along stream) 1280 Comment
  RSA191049  Phacelia longipes Robert F. Thorne 1967-7-2 37260 San Bernardino Angeles National Forest: above Baldy Village, San Antonio Canyon. 1357 Comment
  RSA229211  Phacelia mohavensis Robert F. Thorne 1971-6-30 40829 Los Angeles San Gabriel Mts., Angeles National Forest: Desiccated branch of S fork of Little Rock Creek, 1.8 miles below Alder Saddle in Pinyon Flats area. 1555 Comment
  CATA2839  Phacelia ramosissima var. austrolitoralis Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48751 Santa Barbara Santa Rosa Island: Canada Lobos 30 Comment
  UC1348977  Phacelia ramosissima var. latifolia Robert F. Thorne, M. Z. Thorne 1967-7-19 37126 Los Angeles 1/2 mi above Coldbrook Station; San Gabriel Mts., Angeles National Forest 1097 Comment
  RSA334980  Phacelia rotundifolia Robert F. Thorne, B. Prigge, D. C. Michener, S. Meyer, Walter Wisura 1978-5-25 51735 San Bernardino Providence Mountains: Middle Gilroy Canyon. 1372 Comment
  UC1523529  Phacelia tanacetifolia Robert F. Thorne 1963-5-16 31727 Kern 10.7 mi e Caliente Comment
  RSA191672  Phacelia viscida Robert F. Thorne 1965-3-26 35583 Santa Barbara Santa Ynez Mountains: along Highway 154 SE from San Marcos Pass, at high voltage power line. 305 Comment
  RSA362026  Phacelia viscida Robert F. Thorne, C. W. Tilforth 1976-4-16 47623 Santa Barbara Santa Cruz Island. Central Valley, near small stream in ravine ESE of airstrip 114 Comment
  UCD88184  Phalaris aquatica Robert F. Thorne; P. Everett 1965-5-10 34514 Los Angeles Santa Catalina Island. Gallagher Canyon. 426 Comment
  SBBG31300  Phalaris canariensis R. F. Thorne 1966-6-1 36481 Los Angeles opposite Bird Park, near Avalon 30 Comment
  UCD88789  Phalaris canariensis Robert F. Thorne 1966-6-1 36481 Los Angeles Santa Catalina Island. Bird Park, Avalon. 30 Comment
  SD90633  Phalaris minor Robert F. Thorne 1966-4-16 36062 Los Angeles San Clemente Island; slope of canyon below Lemon Tank near dump, S. of Nanny, NE side of island 182 Comment
  HSC31481  Philadelphus californicus R. F. Thorne, J. P. Simon, Carlos Munoz 1969-6-18 38038 Tulare Steep S bank of Left Fork of Kaweah River, 10 mi. from Hwy. to Sequoia National Park 762 Comment
  RSA0057700  Philadelphus lewisii Robert F. Thorne, P. Everett 1965-8-3 35088 Mendocino Wilderness Lodge, Nature Conservancy. 457 Comment
  GH395295  Philadelphus microphyllus subsp. pumilus R. F. Thorne & W. Wisura 1977-9-17 50774 Unknown San Jacinto Mountain: Long Valley to Round Valley along trail to summit Comment
  RSA336353  Pholisma arenarium Robert F. Thorne, Christopher Davidson 1978-6-18 52192 San Bernardino Cushenbury Canyon: 0.1 mile within San Bernardino National Forest. 1372 Comment
  UCR65231  Pholistoma racemosum R. F. Thorne 1973-4-11 s.n. Los Angeles Channel Islands, Santa Catalina Island: rocky slopes of upper part of Middle Ranch Canyon 381 Comment
  RSA250615  Phoradendron macrophyllum Robert F. Thorne, J. P. Simon, John Dourley, H. Caulfield 1970-5-1 39544 Los Angeles Along Big Rock Creek, below Sycamore Flat Camp, ca 2.5 miles south of Valyermo Station 1280 Comment
  SD69774  Phyllospadix scouleri Robert F. Thorne 1968-4-27 37520 Santa Barbara Santa Barbara Island; below the tide level, attached to rocks at mouth of Cave Canyon, E side of island Comment
  SBBG31415  Phyllospadix torreyi R. F. Thorne 1966-4-4 35793 Los Angeles Bird Rock Comment
  UC1147890  Phyllospadix torreyi Robert F. Thorne 1966-4-4 35793 Los Angeles Bird Rock Santa Catalina Island (on rocks exposed at very low tide) Comment
  UC1979896  Phyllospadix torreyi Robert F. Thorne 1963-5-5 32769 San Diego Moonlight Beach Sate Park near Encinitas. Comment
  RSA191732  Physalis crassifolia Robert F. Thorne, R. Rutherford 1964-4-11 33634 Imperial Araz Wash, between Pasadena and Stud Mountains, Cargo Muchacho Mountains. 305 Comment
  RSA555228  Physalis crassifolia Robert F. Thorne, James Henrickson 1975-5-3 45384 San Bernardino West slope of Providence Mountains, ca. 5 miles SSE of Kelso on Vulcan Mine Road. 793 Comment
  RSA288809  Physalis hederifolia Robert F. Thorne, C. W. Tilforth, Barry A. Prigge 1977-10-29 50704 San Bernardino Canyon above Bonanza King Mine. 1402 Comment
  RSA175261  Picea sitchensis Robert F. Thorne 1957-9-3 19011 Humboldt Little River Beach, few miles S of Trinidad. Comment
  RSA357171  Pilularia americana R. F. Thorne, Earl Lathrop 1975-5-25 45545 Riverside Santa Rosa Plateau: Rancho California, Mesa de Burro 609 Comment
  SEINET6330733 Image available Pilularia americana Robert F. Thorne, E. Lathrop, et al. 1969-5-19 37966 Riverside Santa Rosa Plateau: N end of large vernal marsh, Mesa de Colorado, Rancho California 625 Comment
  UC1265379  Pilularia americana Robert F. Thorne and Earl Lathrop 1969-5-12 37919 Riverside s end Mesa de Colorado (Rancho California); Santa Rosa Plateau 624 Comment
  RSA773236  Pinus Robert F. Thorne 1965-3-27 35670 -a Santa Barbara 4 miles below lookout on Figueroa Mountain on Figueroa Mountain Road toward Los Olivos 945 Comment
  RSA175265  Pinus albicaulis Robert F. Thorne, J. Henrickson 1963-8-10 33121 Mono 1.3 miles beyond Sardine Creek meadow; ca. 1 mile E of Sonora Pass, Toiyabe National Forest. 2866 Comment
  CAS-BOT-BC402195  Pinus attenuata R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  UCD169804  Pinus attenuata R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  UCSB52659  Pinus attenuata Thorne, Robert; Shmida, Avi; Wisura, Walter 1978-5-4 San Bernardino San Bernardino National Forest; along City Creek Road 1430 Comment
  SD117462  Pinus contorta subsp. bolanderi Robert F. Thorne 1974-7-29 45083 Humboldt Samoa Dunes Comment
  UC1409122  Pinus contorta subsp. murrayana Robert F. Thorne and J. Dourley 1967-10-3 37290 Los Angeles just s of peak of Mt. Baden-Powell Mt. Baden-Powell (on dry, open rocky ground) 2849 Comment
  RSA246942  Pinus contorta var. contorta Robert F. Thorne, P. Everett 1965-8-7 35217 b Humboldt Samoa Peninsula. 3 Comment
  RSA0111912  Pinus contorta var. murrayana Robert F. Thorne, J. Henrickson 1963-8-10 33122 Mono 1.3 miles beyond Sardine Creek meadow; ca. 1 mile E of Sonora Pass, Toiyabe National Forest. 2866 Comment
  CAS-BOT-BC78599  Pinus flexilis Robert F. Thorne 1971-8-25 41277 Los Angeles San Gabriel Mts., Angeles National Forest: Summit of Mt. Hawkins 2697 Comment
  RSA290751  Pinus flexilis Robert F. Thorne, Larry E. DeBuhr, J. Dourley 1974-7-10 44860 Inyo Death Valley National Monument, Panamint Mts.: S slope of Rogers Peak E of saddle with Bennett Peak on dry rocky slope 2957 Comment
  CAS-BOT-BC73059  Pinus longaeva Robert F. Thorne; Walter Wisura; Mark Patterson 1983-7-3 56152 Inyo Panamint Mts: Hike from top of Rogers Peak, south up to Eagle Spring, then on to Telescope Peak, 3367 Comment
  RSA290753  Pinus longaeva Robert F. Thorne, Larry E. DeBuhr, J. Dourley 1974-7-10 44838 Inyo Death Valley National Monument, Panamint Mts.: Telescope Peak, summit ridge to S.peak in rocky outcrops 3354 Comment
  RSA175178  Pinus monophylla Robert F. Thorne, J. Henrickson 1963-8-8 1963 Mono 3 miles S of Tom s Place 2073 Comment
  RSA226056  Pinus monophylla Robert F. Thorne, C. W. Tilforth 1971-6-29 40663 Los Angeles San Gabriel Mountains, Angeles National Forest: near junction of Angeles Forest & Mt. Emma Roads 1128 Comment
  RSA229717  Pinus monophylla Robert F. Thorne, C. W. Tilforth 1969-6-26 38196 San Bernardino San Gabriel Mountains, San Bernardino National Forest: divide between Lone Pine and Swarthout Valley, just east of Wrightwood. 1852 Comment
  NY62002  Pinus muricata R. F. Thorne 1976-4-13 47509 Santa Barbara This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA376589  Pinus muricata Robert F. Thorne, C. W. Tilforth 1976-4-14 47542 Santa Barbara Santa Cruz Island: Above Chinese Harbor on pine-clad flat at end of jeep road in forest. 274 Comment
  RSA356996  Pinus quadrifolia Robert F. Thorne, P. Everett 1966-10-18 41854 Riverside Santa Rosa Mountains Comment
  RSA167773  Pinus sabiniana Robert F. Thorne, P. Everett 1964-4-15 33700 Mariposa 2.3 miles north of Bear Valley. 640 Comment
  UCR143396  Pinus torreyana R. F. Thorne, G. D. Wallace, M. Haefs 1977-4-28 48852 Santa Barbara Channel Islands, Santa Rosa Island, E end, Torrey pine grove south of Beechers Bay and west of Southeast Anchorage 122 Comment
  RSA770900  Plagiobothrys R. F. Thorne, Percy C. Everett 1964-4-18 33821 -a Inyo Ca. 5 miles from entrance to Death Valley National Monument [Park], near Salsberry Pass 915 Comment
  RSA357762  Plagiobothrys acanthocarpus R. F. Thorne 1973-4-12 42741 Tulare Pixley Pools Reserve Comment
  SBBG31148  Plagiobothrys canescens R. F. Thorne 1966-4-28 36255 Los Angeles Hay Press area [Haypress] Comment
  RSA639627  Plagiobothrys fulvus var. campestris R. F. Thorne, M. Z. Thorne, Walter Wisura 1978-5-21 51976 Riverside Santa Rosa Plateau: Mesa de Colorado 610 Comment
  RSA642347  Plagiobothrys jonesii R. F. Thorne, A. Schmida, R. K. Benjamin, C. W. Tilforth, B. Prigge, D. Michener, B. Tucker, P. Rogers 1978-5-8 51173 San Bernardino Along Bull Canyon Wash; NNW side of Granite Mountains, South of Kelso Dunes. 762 Comment
  RSA339635  Plagiobothrys nothofulvus R. F. Thorne, M. Z. Thorne 1980-3-23 54007 Los Angeles Johnson's Pasture, above Claremont 609 Comment
  RSA250627  Plagiobothrys nothofulvus R. F. Thorne 1971-3-31 41442 Los Angeles Johnson's Pasture, N on Mountain Ave., Claremont. 549 Comment
  RSA210864  Plagiobothrys scouleri var. hispidulus R. F. Thorne, J. Henrickson, C. W. Tilforth 1969-9-4 39104 Modoc N Fork of Pit River 3.4 mi N of Alturas where crossed by Hwy 395. 1341 Comment
  RSA198964  Plagiobothrys undulatus R. F. Thorne, E. W. Lathrop, P. A. Munz 1968-5-8 37570 Riverside Santa Rosa Plateau: on Mesa de Colorado, Rancho California 671 Comment
  RSA234042  Plagiobothrys undulatus R. F. Thorne, E. W. Lathrop 1969-5-12 37938 Riverside Santa Rosa Plateau: Mesa de Colorado, Rancho California. 625 Comment
  RSA234044  Plagiobothrys undulatus R. F. Thorne, E. W. Lathrop 1969-5-12 37931 Riverside Santa Rosa Plateau: Mesa de Colorado, Rancho California. 625 Comment
  UCR48174  Plagiobothrys undulatus R. F. Thorne 1973-5-23 45525 Riverside Santa Rosa Plateau, north side of Mesa de Colorado 610 Comment
  RSA198937  Plantago bigelovii subsp. californica Robert F. Thorne, Ora M. Clark, E. W. Lathrop, S. Carlquist 1968-4-18 37445 Riverside Santa Rose Plateau: Mesa de Colorado, Rancho California. 671 Comment
  RSA306774  Plantago bigelovii subsp. californica Robert F. Thorne, C. W. Tilforth, B. Given 1979-4-30 52699 Santa Barbara San Miguel Island, Near San Miguel Peak. 229 Comment
  RSA177840  Plantago coronopus Robert F. Thorne, Percy C. Everett 1965-5-11 34561 Los Angeles Santa Catalina Island. N beach of Little Harbor. 2 Comment
  SD124190  Plantago elongata Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52733 Santa Barbara San Miguel Island: Along flat, clayey, sand areas near airstrip on west side of island; 121 Comment
  RSA187909  Plantago erecta Robert F. Thorne 1966-4-7 35937 Los Angeles Santa Catalina Island: Cherry Valley. 61 Comment
  RSA199189  Plantago erecta Robert F. Thorne, D. Propst 1968-5-28 37651 Los Angeles Santa Catalina Island: central Bullrush Canyon. 244 Comment
  RSA286928  Plantago erecta Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-29 49001 Santa Barbara Santa Rosa Island. North slope of Black Mountain. 213 Comment
  SBBG31247  Plantago erecta R. F. Thorne 1966-4-6 35906 Los Angeles N of Catalina Airport 435 Comment
  UCD124485  Plantago erecta Robert F. Thorne; P. Everett 1963-4-18 31491 San Luis Obispo San Luis Obispo County: ca. 6 miles south of Cholame in Temblor Range. 487 Comment
  UCD124486  Plantago erecta Robert F. Thorne 1965-4-20 34342 Sonoma top of Parker Hill (north end of Parker Hill Road), ca. 3 miles north of Santa Rosa. 152 Comment
  RSA246718  Plantago hirtella var. galeottiana Robert F. Thorne, Percy C. Everett 1965-8-1 35073 San Mateo 21.5 miles S of Golden Gate Bridge. 69 Comment
  RSA381087  Plantago major Robert F. Thorne, Steve Boyd, E. W. Lathrop 1985-7-18 61174 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along Cole Canyon. 535 Comment
  RSA761853  Plantago major Robert F. Thorne, R. K. Benjamin, Tim Krantz 1982-8-20 55103 San Bernardino San Bernardino Nat'l Forest, Cushenbury Springs, on property of Kaiser Cement Company, lower end of Cushenbury Grade, N slope of San Bernardino. Mts. 1220 Comment
  RSA246748  Plantago maritima Robert F. Thorne, Percy C. Everett 1965-8-8 35276 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  RSA191734  Plantago ovata var. fastigiata Robert F. Thorne 1963-3-29 32381 Riverside Ca. 7-8 miles E of Mecca, Mecca Hills. 152 Comment
  RSA252042  Plantago ovata var. fastigiata Robert F. Thorne, C. W. Tilforth 1973-4-28 43158 San Bernardino Providence Mountains, 0.5 mile SE of Kelso on road to Cornfield Spring. 671 Comment
  RSA314552  Plantago ovata var. fastigiata Robert F. Thorne, B. Busenberg, W. Wisura, R. K. Benjamin 1983-5-6 55518 Inyo Funeral Mountains. Campsite, lower end of Red Amphitheater, just E. of Death Valley National Monument boundary. 768 Comment
  RSA314639  Plantago ovata var. fastigiata Robert F. Thorne, Fosberg, Sachet, Herbst 1983-4-23 55434 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  RSA177837  Plantago ovata var. insularis Robert F. Thorne, Percy C. Everett 1965-5-11 34584 Los Angeles Santa Catalina Island. N side of N beach of Little Harbor. 15 Comment
  RSA339776  Platanthera leucostachys Robert F. Thorne, Walter Wisura, David C. Michener, James R. Shevock 53735 Tulare Moses Mountain. 2104 Comment
  CHSC23300  Platanthera sparsiflora Robert F. Thorne 1965-9-20 35499 Del Norte Along Old Gasquet Toll Road, ca. 5 mi. ENE of Gasquet. 609 Comment
  HSC24476  Platanthera sparsiflora R. F. Thorne, Selwyn Everist 1971-7-31 41119 San Bernardino San Gabriel Mountains, San Bernardino National Forest: Cienaga near head of Coldwater Fork of Lytle Creek 2134 Comment
  RSA252294  Platystemon californicus Robert F. Thorne 1973-4-29 43315 San Bernardino 11 air miles SE of Cima, 0.4 miles S from Cedar Canyon Road into Pinto Valley Road. 1494 Comment
  RSA316347  Platystemon californicus Robert F. Thorne, Walter Wisura, S. Granger, Pamela Burton 1982-4-20 54969 Los Angeles 1/4-1/2 mile north of Bob's Gap, north slope of Holcomb Ridge, about 2.5 miles due south of Llano. 1159 Comment
  RSA284209  Pleurocoronis pluriseta R. F. Thorne, C. W. Tilforth, B. A. Prigge 1977-10-28 50634 San Bernardino Granite Mountains: Budweiser Canyon. 1220 Comment
  SEINET12534741 Image available Pleurocoronis pluriseta K. Thorne, N. D. Atwood 1986-4-15 4383 Inyo Betw. Nopah, Kingston Ranges. E side Pahrump Val, Tecopa Rd. Ca. 2 mi N of fence line rd. to box canyon and sandy wash. 900 Comment
  RSA336276  Pluchea sericea R. F. Thorne 1978-4-29 52102 Imperial South of Salton Sea, west of Westmoreland. Comment
  RSA371137  Poa R. F. Thorne 1976-7-15 47694 San Bernardino San Bernardino Mountains: San Bernardino National Forest, Big Bear Lake Village near junction of Mill Creek Rd. and Tulip Lane. 2118 Comment
  RSA0037401  Poa Robert F. Thorne, C. W. Tilforth 1971-5-25 39681 Fresno 2.3 miles WSW of Pine Ridge 1311 Comment
  SD69654  Poa annua Robert F. Thorne 1967-5-18 36859 Los Angeles Santa Catalina Island: roadside, Middle Bulrush Canyon 244 Comment
  RSA308026  Poa fendleriana R. F. Thorne, C. W. Tilforth, B. Prigge, Christopher Davidson 1979-5-22 52998 San Bernardino Near relay station on Grapevine Canyon Road ca. 4 air miles south of Fifteenmile Point 1585 Comment
  RSA233672  Poa pringlei R. F. Thorne, Frederick W. Oettinger 1969-8-10 38976 Siskiyou Mt. Shasta National Forest: S slope of Mt. Shasta, Panther Creek Meadows 2195 Comment
  RSA307376  Poa secunda R. F. Thorne, Barry Prigge 1979-5-10 52783 San Bernardino Along Crowder Creek 1 mile east of Cajon Junction on I-15. 976 Comment
  UC1532918  Polygonum amphibium var. stipulaceum Robert F. Thorne, L. DeBuhr, C. Davidson, and C. W. Tilforth 1976-7-15 47677 San Bernardino 1/4 mi e Hwy 18 (across e end of lake); San Bernardino Mts., Big Bear Lake 2072 Comment
  RSA226004  Polygonum arenastrum Robert F. Thorne, C. W. Tilforth 1971-6-29 40652 Los Angeles San Gabriel Mountains, Angeles National Forest: 1.6 mi. above Little Rock Dam near reservoir Campground 976 Comment
  HSC31424  Polygonum aviculare R. F. Thorne, P. Everett 1965-8-8 35244 Humboldt N edge of Eureka, E of Hwy 101 5 Comment
  RSA639641  Polygonum aviculare subsp. aviculare Robert F. Thorne, T. P. Krantz 1982-8-20 55158 San Bernardino San Bernardino National Forest: Lower Holcomb Creek Botanical Area, near creek where crossed by road N from Fawnskin, N of Delamar Mt., W of Hitchcock Ranch 2195 Comment
  RSA226079  Polygonum lapathifolium Robert F. Thorne, C. W. Tilforth 1971-6-17 39952 Los Angeles San Gabriel Mts; Angeles National Forest: 2 mi. up Lower Tujunga Road from Forestry Headquarters; Little Tujunga Creek. 457 Comment
  RSA315553  Polygonum sawatchense subsp. sawatchense Robert F. Thorne, T. P. Krantz, P. Pack, M. Z. Thorne 1982-9-10 55344 San Bernardino San Bernardino National Forest: South Fork Meadows of Santa Ana River and adjacent forest, San Gorgonio Wilderness area, from Poop-Out Hill parking lot along Flume Trail through meadows, and back along Pack Trail 2378 Comment
  RSA233674  Polygonum shastense Robert F. Thorne 1969-8-10 38987 Siskiyou Mount Shasta National Forest; south slope of Mt. Shasta at base of boulders. 2378 Comment
  SBBG31118  Polypogon interruptus R. F. Thorne 1966-6-1 36497 Los Angeles stream flowing from reservoir at upper end of Cape Cyn 335 Comment
  SBBG31055  Polypogon monspeliensis R. F. Thorne with P. C. Everett 1965-5-11 34550 Los Angeles behind N beach at Little Harbor 1 Comment
  GH382143  Populus balsamifera subsp. trichocarpa R. F. Thorne & P. Everett 1964-2-7 33486 Unknown along creek in Middle Canyon below dam, Santa Catalina Island 152 Comment
  RSA342042  Populus fremontii Robert F. Thorne, W. A. Tilforth, L. M. Shultz, R. K. Benjamin, J. Hogge 1980-4-16 54102 Riverside San Bernardino Mountains: Flood plain (wash) along Whitewater River, ca. 3.0 miles N of Whitewater Post Office. 591 Comment
  RSA171966  Populus tremuloides Robert F. Thorne 1963-7-16 32811 Mono Small stream feeding Grant Lake, Inyo National Forest. 2175 Comment
  RSA286969  Populus trichocarpa Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-30 48759 Santa Barbara Santa Rosa Island: Canada Lobos. 23 Comment
  RSA234114  Porophyllum gracile R. F. Thorne, R. Carolin 1967-3-21 41644 Riverside Joshua Tree National Monument: Cottonwood Springs. 915 Comment
  RSA284235  Porophyllum gracile R. F. Thorne, C. W. Tilforth, B. A. Prigge 1977-10-28 50646 San Bernardino Granite Mountains: Budweiser Canyon. 1220 Comment
  SEINET12889161 Image available Potamogeton crispus R. F. Thorne 1966-1 36493 Los Angeles Upper end of Cape Canyon Comment
  RSA198981  Potamogeton foliosus Robert F. Thorne, E. Lathrop, Philip A. Munz 1968-5-8 37564 Riverside Santa Rosa Plateau: Shallow water of vernal marsh on Mesa de Colorado, Rancho California 671 Comment
  RSA344287  Potamogeton foliosus Robert F. Thorne, Walter Wisura 1979-8-24 53698 San Bernardino Jenks Lake, near Barton Flats Comment
  RSA388398  Potamogeton foliosus Robert F. Thorne, E. W. Lathrop, Steve Boyd 1985-7-18 61200 Riverside Santa Rosa Plateau, Nature Conservancy Reserve: along Cole Canyon. 535 Comment
  UCR222476  Potamogeton foliosus R. F. Thorne, M. Patterson 1982-8-31 55235 Lake North Coast Range, northwest slope of Mount Hannah, Boggs Lake 854 Comment
  RSA239308  Potamogeton gramineus Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-21 42367 Shasta Lassen Volcanic National Park: Shallow water of summit Lake. 2043 Comment
  RSA252439  Potamogeton illinoensis Robert F. Thorne, C. W. Tilforth 1969-9-7 39270 Mono Shallow water of Hot Creek N of Crowley Lake where creek is crossed by Owens River road. 2073 Comment
  RSA239266  Potamogeton natans Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42322 Plumas Plumas National Forest: Snake Lake ca. 4 miles NW of Quincy. 1220 Comment
  RSA286296  Potamogeton natans Robert F. Thorne 1974-7-30 45064 Sierra Tahoe National Forest: Goose, Haven and Snag Lakes areas. 2057 Comment
  RSA0011552  Potamogeton nodosus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46967 Modoc Ca. 3.4 miles north of Alturas at bridge over North Fork of Pit River 1341 Comment
  RSA302734  Potamogeton pusillus Robert F. Thorne 1979-7-3 53335 San Bernardino San Bernardino Mountians: San Bernardino National Forest. Holcomb Creek, west of Hitchcock Ranch on EN12. 2180 Comment
  RSA337417  Potamogeton pusillus Robert F. Thorne, C. W. Tilforth, et al. 1979-7-12 53386 San Bernardino N end of lake Gregory 1387 Comment
  RSA337425  Potamogeton pusillus Robert F. Thorne, C. W. Tilforth, et al. 1979-7-12 53443 San Bernardino San Bernardino National Forest. Green Valley Lake and inlet stream. 2111 Comment
  RSA592249  Potamogeton pusillus Robert F. Thorne, C. W. Tilforth 1979-7-12 53424 San Bernardino Grass Valley Lake, about 1 mile west of Lake Arrowhead, north end of lake and below dam on stream. 1570 Comment
  SD90366  Potamogeton pusillus Robert F. Thorne, E. Lathrop 1969-6-6 39322 Riverside Santa Rosa Plateau: Rancho California, Mesa de Colorado, behind the dam 625 Comment
  RSA246625  Potamogeton pusillus subsp. tenuissimus Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-19 42306 Nevada Tahoe National Forest: Shallow Water at margin of Fuller Lake. 1616 Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  RSA175185  Potentilla anserina var. grandis Robert F. Thorne, Percy C. Everett 1963-6-12 32269 San Luis Obispo 1 mile N of entrance to Piedras Blancas Point. 8 Comment
  RSA228990  Potentilla glandulosa subsp. ewanii Robert F. Thorne 1971-8-25 41316 Los Angeles San Gabriel Mountains, Angeles National Forest: near Windy Spring on N slope of Mt. Islip. 2256 Comment
  RSA246702  Potentilla palustris Robert F. Thorne 1965-8-7 35184 Humboldt Big Lagoon. 2 Comment
  SD123991  Potentilla saxosa Robert F. Thorne, C. W. Tilforth, B. Prigge, C. Davidson, et al. 1979-5-22 52990 San Bernardino About 4 air miles south of Fifteenmile Point, near relay station on Grapevine Canyon Road. 1580 Comment
  RSA336461  Potentilla wheeleri Robert F. Thorne, A. Shmida, Walter Wisura 1978-5-4 51959 San Bernardino San Bernardino National Forest: Baldwin Lake, along N edge. 2080 Comment
  RSA252498  Prunus emarginata Robert F. Thorne 1969-9-6 39224 Plumas Ca. 2.5 miles S of Graeagle on Gold Lake Road. 1646 Comment
  RSA336035  Prunus fremontii Robert F. Thorne, A. Shmida, R. Whittaker 1978-4-23 52068 Riverside Along Palms to Pines Highway, N slope of Santa Rosa Mts. Comment
  RSA248836  Prunus lyonii Robert F. Thorne 1973-4-11 42844 Los Angeles San Clemente Island, middle part of Norton Canyon. 274 Comment
  RSA639824  Psathyrotes annua R. F. Thorne 1963-5-17 31792 Kern Red Rock Canyon Comment
  RSA279842  Psathyrotes ramosissima R. F. Thorne, C. W. Tilforth 1974-5-30 44585 Inyo Panamint Valley; 5.9 miles down Hwy 178 from Wildrose Canyon ranger station, just S of Death Valley National monument boundary in gravelly wash. 732 Comment
  RSA305569  Pseudognaphalium biolettii R. F. Thorne, John Dourley, Walter Wisura 1979-4-24 52508 Santa Barbara Santa Cruz Island. Near buildings on Christi Ranch located on the west end of the building. 30 Comment
  SD69039  Pseudognaphalium luteoalbum Robert F. Thorne 1966-9-14 36647 Los Angeles Santa Catalina Island; disturbed area behind Ben Weston Beach. 3 Comment
  UC1518810  Pseudognaphalium stramineum Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52683 Santa Barbara Cuyler Harbor San Miguel Island, Cuyler Harbor (on sandy soils) 3 Comment
  CATA2786  Pseudognaphalium stramineum Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52751 Santa Barbara San Miguel Island: Upper part of sandy, north-facing sea bluff west of Simonton Cove 76 Comment
  RSA234028  Psilocarphus brevissimus R. F. Thorne, E. W. Lathrop 1969-5-19 37955 Riverside Santa Rosa Plateau: margin of N end of large vernal marsh, Mesa de Colorado, Rancho California. 624 Comment
  RSA760353  Psilocarphus brevissimus var. brevissimus R. F. Thorne, E. W. Lathrop, S. Beckstrom-Sternberg, B. Martin 1982-05 55213 Riverside SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road 730 Comment
  UC1531090  Psilocarphus brevissimus var. brevissimus R. F. Thorne, C. W. Tilforth, et al. Jul 12 1979-Jul 13 1979 53496 San Bernardino just w Holcomb Valley Campground; San Bernardino National Forest 2247 Comment
  RSA288783  Psilostrophe cooperi R. F. Thorne, C. W. Tilforth, B. A. Prigge 1977-10-29 50761 San Bernardino Providence Mountains: foot of bajada below Bonanza King Mine. Near junction of road to Blair Ranch and Mine 1159 Comment
  UCR43486  Psoralea macrostachya R. F. Thorne, W. Wisura, E. W. Lathrop, S. Meury 1985-5-18 61161 San Diego Peninsular Ranges/Santa Ana Mtns, Santa Rosa Plateau: dry waterfall tributary to Cottonwood Creek. 427 Comment
  SBBG21967  Psorothamnus fremontii R. F. Thorne 1964-5-3 33849 Riverside near hwy ca. 4 mi S of Morongo Valley, ca. 3 mi S of San Bernardino Co line Comment
  RSA172309  Psorothamnus schottii Robert F. Thorne 1963-3-29 32377 Riverside 5 miles E of Mecca, Mecca Hills. 152 Comment
  RSA336259  Psorothamnus schottii Robert F. Thorne 1978-5-30 52151 Imperial Algodones Dunes: N end of Dunes, ca. 2 miles SSE of Regina. 61 Comment
  SD125366  Ptelea crenulata Robert F. Thorne, C. W. Tilforth 1971-5-24 39560 Fresno Foothills of Sierra Nevada: 1.5 miles below Tollhouse, wooded slope of valley 548 Comment
  RSA225772  Pteridium aquilinum var. pubescens R. F. Thorne, Selwyn Everist 1971-7-31 41099 San Bernardino San Gabriel Mountains, San Bernardino National Forest: Cienaga near head of Coldwater Fork of Lytle Creek 2134 Comment
  RSA233734  Pterospora andromedea R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39153 Modoc Near Mill Creek Falls. Modoc Nataional Forest, Warner Mts. 1753 Comment
  RSA187820  Pterostegia drymarioides Robert F. Thorne 1966-4-7 35966 Los Angeles Santa Catalina Island: in canyon bottom, Cherry Valley 61 Comment
  RSA251463  Pterostegia drymarioides Robert F. Thorne 1973-4-11 42826 Los Angeles San Clemente Island: upper part of Norton Canyon. 335 Comment
  RSA226925  Punica granatum Robert F. Thorne, C. W. Tilforth 1971-6-17 39960 Los Angeles San Gabriel Mountains, Angeles National Forest: 2 mi. up Lower Tujunga Rd. from Forestry Headquarters 457 Comment
  RSA279718  Purshia stansburyana Robert F. Thorne, C. W. Tilforth 1974-5-29 44567 Inyo Death Valley National Monument: Red Pass 1601 Comment
  RSA310919  Purshia stansburyana Robert F. Thorne, Walter Wisura, M. Patterson 1983-7-1 56098 Inyo Panamint Mountains: from the mouth of Water (Thorndike) Canyon to the spring on the N slope of Rogers Peak. 2268 Comment
  CAS-BOT-BC158653  Purshia tridentata var. glandulosa Robert F. Thorne 1963-5-17 31795 Kern Summit of Walker Pass 1615 Comment
  RSA251959  Purshia tridentata var. glandulosa Robert F. Thorne, C. W. Tilforth 1973-5-30 43608 San Bernardino Eastern Mojave Desert, New York Mountains: upper portion of Caruthers Canyon. 1677 Comment
  RSA280103  Purshia tridentata var. tridentata Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-20 38696 Inyo White Mountains, Inyo National Forest. 1.5 miles N of Cedar Flat Junction of Westguard Pass Road on road to Bristlecone Pine Recreation Areas. 2317 Comment
  RSA0080534  Pyrola crypta R. F. Thorne 1974-7-30 45027 Sierra Tahoe National Forest: Goose, Haven and Snag Lakes area. 2058 Comment
  UC1302347  Quercus X acutidens Robert F. Thorne and P. Everett 1963-9-26 33229 San Diego ca 1 mi w intersection of Hwy. 79 and Hwy. 80 (ca 1 mi from Descanso) 1066 Comment
  CAS-BOT-BC104379  Quercus X macdonaldii Robert F. Thorne; P. C. Everett 1964-2-6 33430 Los Angeles ca 800' (perhaps 1 mil. SW of Empire Landing), N Central part of Santa Catalina Island Comment
  UCD46924  Quercus X macdonaldii Robert F. Thorne 1967-5-18 36863 Los Angeles Santa Catalina Island: Middle Bulrush Canyon. 243 Comment
  HSC78676  Quercus chrysolepis R. F. Thorne, M. Z. Thorne 1966-5-31 36430 Los Angeles Ridge running from S end of Mt. Orizaba, S side of S fork of Fern Canyon 488 Comment
  RSA188339  Quercus chrysolepis Robert F. Thorne, M. Z. Thorne 1966-5-31 36420 Los Angeles Santa Catalina Island. Ridge running from S end of Mt Orizaba, S side of S fork of Fern Canyon 488 Comment
  SBBG26453  Quercus chrysolepis R. F. Thorne with M. Z. Thorne 1966-5-31 36418 Los Angeles ridge running from S end of Mt Orizaba, S side of S fork of Fern Cyn 426 Comment
  RSA172201  Quercus durata Robert F. Thorne, P. Everett 1963-6-7 32148 San Luis Obispo Along Cuesta Ridge road, 1.8 miles NW from Cuesta Pass Freeway. 549 Comment
  RSA177964  Quercus kelloggii Robert F. Thorne 1965-4-20 34385 Sonoma Robert Sone's place on Rock Ridge Lane- Mentecito Ave. on Rincon Ridge, Santa Rosa. 107 Comment
  UCD46708  Quercus kelloggii Robert F. Thorne; P. Everett 1963-9-27 33273 San Diego In southern oak woodland ca. 0.1 mi. N of entrance to Volcan Indian Reservation on Hwy 79, and ca. 3 mi. N of Santa Isabel. 944 Comment
  SD69579  Quercus pacifica Robert F. Thorne 1966-9-15 36701 Los Angeles Santa Catalina Island, in Cape Canyon near small reservoir 320 Comment
  UCR48226  Quercus parvula R. F. Thorne, C. W. Tilforth 1976-4-13 47497 Santa Barbara Channel Islands, Santa Cruz Island, north-facing slope above Canada Cervada, c. 0.5 mi west of Cuesta Ridge, west end of the island 427 Comment
  RSA190942  Quercus tomentella Robert F. Thorne 1967-5-19 36885 Los Angeles Santa Catalina Island, top of side valley of Sweetwater Canyon. 381 Comment
  RSA640284  Quercus tomentella Robert F. Thorne 1971-5-18 41361 Los Angeles Santa Catalina Island: upper part of West Fork of Gallagher Canyon. 381 Comment
  SBBG26456  Quercus tomentella R. F. Thorne 1966-5-31 36431 Los Angeles ridge running from S end of Mt Orizaba, S side of S fork of Fern Cyn 426 Comment
  SD90619  Quercus tomentella Robert F. Thorne 1966-4-16 36074 Los Angeles San Clemente Island, NE side of island, south of Nanny, in bottom of canyon below Lemon Tank, near dump, small grove 182 Comment
  SEINET13953950 Image available Quercus tomentella Robert F. Thorne, P. Everett 1965-1 34503 Los Angeles along gully, upper end of Gallagher Canyon; Santa Catalina Island 411 Comment
  RSA278883  Quercus turbinella subsp. turbinella Robert F. Thorne, Tilforth, Shmida, Barry A. Prigge 1976-5-9 51303 San Bernardino New York Mountains: NNW side of range, ESE from Brant (UPRR siding) up main wash to base of mountains 1189 Comment
  UCD47352  Quercus turbinella subsp. turbinella Robert F. Thorne; C. W. Tilforth, L. DeBuhr, et. al. 1977-5-13 49297 San Bernardino E.Mojave Desert, New York MTS: Caruthers Canyon. Comment
  UCD47362  Quercus turbinella subsp. turbinella Robert F. Thorne; C. W. Tilforth 1973-5-31 43701 San Bernardino E. Mojave Desert, New York Mts: Caruthers Canyon, below Giant Ledge Mine. 1889 Comment
  RSA307371  Quercus wislizeni var. frutescens Robert F. Thorne, Barry A. Prigge 1979-5-10 52813 San Bernardino San Bernardino Mts: Summit of Canyon Pass near Santa Fe RR tracks about 4mile E of Canyon junction on Hwy I 15. 1159 Comment
  RSA252349  Rafinesquia californica R. F. Thorne, C. W. Tilforth 1973-6-1 43810 San Bernardino E. Mojave Desert, Kingston Mountains: ca. 0.5 mile E of Horsethief Springs 1372 Comment
  SD69715  Rafinesquia californica Robert F. Thorne 1966-4-28 36217 Los Angeles Santa Catalina Island,west-facing rocky bank and talus near upper end Renton Mine road in Pebbly Beach Canyon 259 Comment
  RSA357783  Rafinesquia neomexicana R. F. Thorne, M. Z. Thorne 1973-3-30 42670 Riverside Morongo Valley Canyon: Near mouth at junction of roads to Morongo Valley and Desert Hot Springs, Mission Creek. 488 Comment
  CAS-BOT-BC217262  Ranunculus aquatilis var. aquatilis Robert Folger Thorne; C. W. Tilforth 1969-9-5 39171 Modoc Clear Lake, Warner Mountains. 1767 Comment
  RSA291890  Ranunculus aquatilis var. capillaceus Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-21 38718 Inyo Owens Valley: Locust Ditch. 1143 Comment
  SD68980  Ranunculus aquatilis var. diffusus Robert F. Thorne, E. Lathrop, O. Clarke, S. Carlquist 1968-4-18 37457 Riverside Santa Rosa Plateau: vernal marsh on Mesa de Colorado, Rancho California 671 Comment
  RSA302391  Ranunculus cymbalaria var. saximontanus Robert F. Thorne, Mike Herter, B. A. Prigge 1979-7-3 53324 San Bernardino San Bernardino Mountains: San Bernardino National Forest. Along Holcomb Creek and 3N08 northwest of Little Bear Peak 1997 Comment
  SD90444  Ranunculus cymbalaria var. saximontanus Robert F. Thorne, J. Dourley 1967-10-10 37341 Los Angeles San Gabriel Mts., Angeles National Forest: Jackson Lake, west end 1867 Comment
  RSA210878  Ranunculus sceleratus var. multifidus Robert F. Thorne, James Henrickson, C. W. Tilforth 1969-9-4 s.n. Modoc N Fork of Pit River 3.4 mi N of Alturas where crossed by Hwy 395. 1341 Comment
  SD107941  Raphanus raphanistrum Robert F. Thorne, G. Wallace and M. Haefs 1977-4-30 48703 Santa Barbara Santa Rosa Island; ranch dump at edge of cliff, Beechers Bay, northeast end of island. 24 Comment
  RSA0023267  Raphanus sativus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49780 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA247900  Rhamnus ilicifolia Robert F. Thorne, C. W. Tilforth 1973-6-19 43994 San Bernardino E. Mojave Desert. Providence Mts. Mitchell Caverns State Park, large canyon N and W of park headquarters 1341 Comment
  RSA249879  Rhamnus ilicifolia Robert F. Thorne 1969-6-18 38059 Tulare On steep S bank of Left Fork of Kaweah River, ca. 10 mi from hwy to Sequoia National Park. 762 Comment
  RSA314404  Rhamnus ilicifolia Robert F. Thorne, Kay Wright, R. K. Benjamin 1982-10-8 55387 Riverside Side canyon on W side of Whitewater Cyn, ca. 3.3 mi. N of Whitewater Post Office. 595 Comment
  RSA637661  Rhamnus ilicifolia Robert F. Thorne, R. Carolin, C. Davidson 1967-3-23 41611 Los Angeles San Gabriel Mts., Angeles National Forest: San Gabriel Canyon near Coldbrook. 1067 Comment
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Nov 5 2014
  RSA788242  Rhamnus ilicifolia Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49630 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  RSA790661  Rhamnus ilicifolia Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49703 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  SBBG31298  Rhamnus pirifolia R. F. Thorne with P. C. Everett 1965-5-10 34474 Los Angeles near Echo Lake 426 Comment
  CAS-BOT-BC56564  Rhododendron columbianum Robert F. Thorne; L. DeBuhr; C. W. Tilforth 1972-9-19 42295 Nevada Tahoe National Forest: Willow Spring 2.5 miles W of west end of Bowman Lake and 1 mi. S of rd. to Graniteville 1737 Comment
  RSA170995  Rhododendron macrophyllum R. F. Thorne, Percy C. Everett, K. Thorne 1964-10-19 34209 Mendocino Descanso Nursery on Benson Lane, ca. 2 miles SE of Ft. Bragg. Comment
  CAS-BOT-BC200035  Rhododendron occidentale var. californicum Robert F. Thorne; J. P. Simon; C. W. Tilforth 1969-6-24 38120 Riverside San Bernardino National Forest, San Jacinto Mts.: Above & in James Reserve 1676 Comment
  CAS-BOT-BC168095  Rhus aromatica Robert F. Thorne; W. Wisura; C. Davidson; B. Prigge 1977-5-29 49263 San Bernardino E. Mojave Desert, New York Mts: Caruthers Canyon 1767 Comment
  CAS-BOT-BC167920  Rhus integrifolia Robert F. Thorne; Reed Rollins; Doug Propst; R. Carolin 1967-3-18 36738 Los Angeles Santa Catalina Island: Wild Boar Gully, ca. 1 mi WNW of Salta Verde Pt., on Salta Verde 198 Comment
  SD69449  Rhus integrifolia Robert F. Thorne, P. Everett 1965-6-22 Los Angeles Santa Catalina Island: South of Avalon golf course in open, flat, sandybottom of Avalon Canyon 89 Comment
  RSA346257  Rhus ovata R. F. Thorne, W. A. Tilforth, L. Shultz, R. K. Benjamin, J. Hogge 1980-4-16 54059 Riverside Branch Ravine W from Whitewater Canyon, W of road and ca. 3.2 miles N of Hwy 10 and Whitewater PO. 610 Comment
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Apr 30 2011
  RSA386869  Rhus ovata R. F. Thorne, C. W. Tilforth, et al. 1976-4-13 47465 Santa Barbara Santa Cruz Island. 0.5 mi WSW of laboratory, Central Valley 213 Comment
  SBBG31411  Rhus ovata R. F. Thorne, R. Rollins, D. Probst, R. Carolin 1967-3-18 36739 Los Angeles Wild Boar Gully, ca. 1 mi WNW of Salta Verde Pt 198 Comment
  RSA247032  Rhus trilobata var. anisophylla R. F. Thorne, C. W. Tilforth 1973-6-19 43947 San Bernardino Providence Mountains: N end of Mts. c. 7 mi SE of Kelso (by road); upper part of Globe canyon below the Globe mine 1463 Comment
  RSA757505  Rhus trilobata var. anisophylla R. F. Thorne, R. K. Benjamin, Tim Krantz 1982-8-20 55086 San Bernardino San Bernardino Nat'l Forest, Cushenbury Springs, on property of Kaiser Cement Company, lower end of Cushenbury Grade, N slope of San Bndo. Mts. 1220 Comment
  SD90416  Rhus trilobata var. pilosissima Robert F. Thorne, E. Lathrop 1969-6-6 39324 Riverside Santa Rosa Plateau: Rancho California 609 Comment
  RSA356013  Ribes californicum Robert F. Thorne 1965-3-27 35684 Santa Barbara Campsite, 2 miles beyond Midland School. 427 Comment
  RSA279116  Ribes californicum var. hesperium Robert F. Thorne 1971-3-18 41495 Los Angeles Cobal Canyon, c. 3 miles N of Claremont. 503 Comment
  RSA369310  Ribes cereum Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47730 San Bernardino San Bernardino National Forest, ca. 2 miles along Mill Creek Road and 2N10 from Coldbrook Campground, big cienega area along Mill (Metcalf) Creek. 2226 Comment
  RSA230181  Ribes cereum var. cereum Robert F. Thorne 1969-7-10 38362 Los Angeles Mescal Creek Play Area 2043 Comment
  RSA307139  Ribes indecorum Robert F. Thorne, Barry A. Prigge 1979-5-10 52818 San Bernardino San Bernardino Mountains; on road to Silverwood Lake above stream in Horsethief Canyon S of junction with road to Hesperia. 1098 Comment
  UCR45966  Ribes indecorum R. F. Thorne, W. Wisura, E. W. Lathrop, S. Meury 1985-5-18 60669 Riverside Peninsular Ranges/Santa Ana Mtns, Santa Rosa Plateau: edge of Cleveland National Forest 610 Comment
  SD255194  Ribes malvaceum var. viridifolium R. F. Thorne, E. W. Lathrop 1977-5-18 49730 Orange Santa Ana Mountains: at head of Trabuco Canyon Trail. Comment
  RSA225862  Ribes montigenum Robert F. Thorne 1971-7-28 41048 San Bernardino San Bernardino National Forest: N-facing slope of Pine Mt. 2896 Comment
  RSA290797  Ribes montigenum Robert F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-10 44839 Inyo Death Valley national Monument, Panamint Mts: just below summit ridge on E slope of Telescope Peak in Pinus longaeva 3323 Comment
  CAS-BOT-BC219246  Ribes nevadense Robert F. Thorne; Carlos Munoz 1969-6-17 38026 San Bernardino Lower quarter of Icehouse Canyon, San Gabriel Mountains, Angeles National Forest 1767 Comment
  RSA0018062  Ribes roezlii Robert F. Thorne, D. C. Michener, Jim R. Shevock, W. Wisura 1979-9-5 53773 Tulare Moses Mountain. 2165 Comment
  CAS-BOT-BC209278  Ribes roezlii var. roezlii Robert F. Thorne; P. Everett 1967-6-7 36950 Tulare Sequoia National Forest: N Fork of Middle Fork of Tule River 1.4 mi up camp Wishon Road from power plant at ca 3200 ft Comment
  RSA0018051  Ribes roezlii var. roezlii Robert F. Thorne, P. C. Everett 1967-6-7 36950 Tulare Sequoia National Forest, on bank of small stream N Fork of Middle Fork of Tule River in chaparral 1.4 miles up Camp Wishon Road from power plant. 976 Comment
  SBBG119375  Ribes velutinum R. F. Thorne, C. W. Tilforth 1974-5-10 44499 San Bernardino E slope of New York Pk 1920 Comment
  SEINET12215923  Ribes velutinum var. velutinum R. F. Thorne, Wisura, W. 1978-1 51566 San Bernardino Mojave Desert, Granite Mts., upper Cottonwood Basin 1646 Comment
  RSA642809  Rorippa curvisiliqua R. F. Thorne, Walter Wisura, D. C. Michener, J. R. Shevock 1979-9-5 53775 Tulare Moses Mountain. 2165 Comment
  RSA233529  Rosa californica Robert F. Thorne, C. W. Tilforth 1972-6-29 42069 San Bernardino San Gabriel Mountains, San Bernardino National Forest: Lone Pine Canyon Road where road crosses dry creek bed, c. 1 mi. NW of Lost Lake. 915 Comment
  RSA311191  Rosa woodsii subsp. gratissima Robert F. Thorne, Walter Wisura, Mark Patterson 1983-7-3 56176 Inyo Panamint Mountains: Near mouth of Water (Thorndike) Canyon, Death Valley National Monument. 2317 Comment
  UCD101158  Rumex crispus R. F. Thorne; B. Prigge and C. W. Tilforth 2-3 Jun 1980 54287 San Bernardino San Bernardino Mts: Near Mojave River, S of Hesperia and 5.2 mi N of junction of Silverwood Lake and Hesperia roads. 975 Comment
  RSA369454  Rumex fueginus Robert F. Thorne, Larry E. DeBuhr, C. Davidson, C. W. Tilforth 1976-7-15 47668 San Bernardino San Bernardino Mountains: 1/4 mile E of Highway 18 across E end of Big Bear Lake 2073 Comment
  RSA788814  Rumex salicifolius Robert F. Thorne, Walter Wisura 1977-9-17 50776 Riverside San Jacinto Mountain: Long Valley to Round Valley along trail to summit. 2591 Comment
  GH401604  Salazaria mexicana R. F. Thorne & C. W. Tilforth 1969-6-26 38200 Unknown San Gabriel Mts., Angeles National Forest: Big Rock canyon at Sycamore Flat Campground, SW slope of Pinyon Ridge 1295 Comment
  RSA279770  Salazaria mexicana Robert F. Thorne 1974-5-30 44649 Inyo Death Valley National Monument: Titus Canyon just N of junction with main canyon below Leadfield 1143 Comment
  RSA313409  Salazaria mexicana Robert F. Thorne 1973-6-21 44129 San Bernardino New York Mountains: W branch of Fourth of July Canyon. 1768 Comment
  RSA246912  Salicornia virginica R. F. Thorne 1965-8-11 35348 Santa Barbara Carpenteria 2 Comment
  UC1349364  Salicornia virginica Robert F. Thorne 1966-4-5 35878 Los Angeles behind Little Harbor beach; Santa Catalina Island 3 Comment
  RSA280098  Salix drummondiana Robert F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38745 Inyo E. slope, Onion Valley: along Independence Creek. 2774 Comment
  HSC31039  Salix eastwoodiae R. F. Thorne, C. W. Tilforth 1969-9-6 39197 Sierra Haven Lake margin 1951 Comment
  RSA307121  Salix exigua Robert F. Thorne, Barry A. Prigge 1979-5-10 52840 San Bernardino San Bernardino Mountains: Silverwood Lake Recreational Park on SW bay of lake. 1037 Comment
  UC1375321  Salix exigua Robert F. Thorne and C. W. Tilforth 1971-6-17 39888 Los Angeles 0.7 mi w Soledad Station (along Santa Clara R.); n slope San Gabriel Mts., Soledad Canyon 609 Comment
  RSA117654  Salix laevigata Robert F. Thorne, Percy C. Everett 1965-5-10 34438 Los Angeles Cape Canyon, Santa Catalina Island. 274 Comment
  RSA191574  Salix laevigata Robert F. Thorne 1966-4-23 36151 Los Angeles San Gabriel Mountains: Jackson Lake WNW of Big Pines, Big Pines Recreation Area, Angeles National Forest 1829 Comment
  RSA316235  Salix laevigata Robert F. Thorne, Barry A. Prigge, Kay Wright, R. K. Benjamin 1981-6-4 54915 San Bernardino San Bernardino Mountains: Arrowhead Road to Hesperia, 3.3 miles north of Cedar Springs Dam, along small stream. 1037 Comment
  RSA641180  Salix laevigata Robert F. Thorne 1967-10-21 37398 San Bernardino San Gabriel Mountains: Southeast slope of Mt. San Antonio, below Gold Ridge and near Sierra Club Ski Lodge. 2561 Comment
  SD69482  Salix laevigata Robert F. Thorne 1966-4-5 35812 Los Angeles Santa Catalina Island: along small stream in Middle Ranch Canyon below Stage Station SW of Eagles Nest 75 Comment
  SEINET11149815 Image available Salix laevigata var. laevigata Robert F. Thorne, C. W. Tilforth, et al. 1976-1 47594 Santa Barbara Santa Cruz Island. Cascada Canyon, tributary to the Central Valley, ca. 2 mi. WNW of laboratory, small trees along stream. 229 Comment
  RSA171963  Salix lasiolepis Robert F. Thorne 1957-8-29 18936 Monterey Monterey Peninsula. Comment
  RSA191572  Salix lasiolepis Robert F. Thorne 1966-4-23 36151 -A Los Angeles San Gabriel Mountains: Jackson Lake WNW of Big Pines, Big Pines Recreation Area, Angeles National Forest 1829 Comment
  RSA641058  Salix lasiolepis Robert F. Thorne 1967-10-21 37402 San Bernardino San Gabriel Mountains: Near San Antonio Falls. 1951 Comment
  RSA171977  Salix lemmonii Robert F. Thorne, James Henrickson 1963-8-9 33032 Mono Along Sardine Creek. Ca. 1.5 miles SE of Sonora Pass. Toiyabe National Forest. 2744 Comment
  SD117475  Salix lemmonii Robert F. Thorne, C. Davidson, W. Wisura, T. Kranz 1977-7-21 49941 San Bernardino San Bernardino Mts., San Gorgonio Wilderness: at Limber pine Springs 2652 Comment
  RSA252406  Salix lucida subsp. caudata Robert F. Thorne, C. W. Tilforth 1969-9-5 39144 Modoc Along S Fork of Pit River above jct,. with West Creek at Public Campground. Ca 6 miles E of Likely. 1402 Comment
  SEINET2065115 Image available Salix lutea Robert F. Thorne, R. K. Benjamin, T. Krantz 1980-9-9 54750 San Bernardino Dry Lake and South Fork of Santa Ana River, San Gorgonio Wilderness Area. 2499 Comment
  RSA233776  Salix scouleriana Robert F. Thorne, C. W. Tilforth 1969-9-6 39216 Sierra Goose Lake, SE of Gold Lake. 1951 Comment
  SBBG21988  Salix scouleriana R. F. Thorne 1963-7-16 32813 Mono above stream feeding Grant Lake 2179 Comment
  RSA171961  Salix sitchensis Robert F. Thorne 1957-9-2 18989 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA250527  Salsola paulsenii R. F. Thorne, John Dourley 1967-10-10 37326 San Bernardino San Bernardino National Forest; San Gabriel Mountains: At Lone Pine Valley. 899 Comment
  RSA334362  Salsola tragus R. F. Thorne, L. M. Shultz 1980-9-19 54762 San Bernardino Kingston Mountains: Area about Crystal Springs and above and to the W on blue limestone mountains 1128 Comment
  UC1532879  Saltugilia splendens subsp. splendens Robert F. Thorne, L. DeBuhr, C. Davidson, and C. W. Tilforth 1976-7-15 47637 San Bernardino ca 1 1/2 mi se Rebel Ridge (w of Sawmill Cyn); San Bernardino Mountains, San Bernardino National Forest 2164 Comment
  GH403532  Salvia R. F. Thorne & P. Everett 1965-5-10 34431 Unknown near small stream, Cape Canyon, Santa Catalina Island 274 Comment
  SD69617  Salvia apiana Robert F. Thorne, P. Everett 1965-5-10 34440 Los Angeles Cape Canyon, Santa Catalina Island. 274 Comment
  RSA187972  Salvia columbariae Robert F. Thorne 1966-4-7 35945 Los Angeles Santa Catalina Island: Cherry Valley. 61 Comment
  RSA279269  Salvia columbariae Robert F. Thorne 1975-5-3 45403 San Bernardino SE of Kelso Dunes: 7 mi. S of Kelso on Kelbaker Road, and 8 mi. N of Granite Pass. 762 Comment
  RSA233396  Salvia columbariae Robert F. Thorne 1966-4-17 36114 Los Angeles San Clemente Island: near bottom of Box Canyon NW of Horse Canyon, SW of Thirst. 213 Comment
  RSA316352  Salvia columbariae Robert F. Thorne, Walter Wisura, Suzanne Granger, Pamela Burton 1982-4-20 54961 Los Angeles 2.5 miles S of Llano 1159 Comment
  UCR228126  Salvia dorrii subsp. dorrii R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, Robert K. Benjamin, et al. 1976-10-29 47917 San Bernardino East Mojave Desert, New York Mountains, near mouth of Keystone Canyon 1662 Comment
  RSA247034  Salvia dorrii var. pilosa Robert F. Thorne, C. W. Tilforth 1973-6-19 43939 San Bernardino E Mojave Desert, Providence Mountains: Globe Canyon, N end of mountains c. 7 miles NE of Kelso (by road); upper part of canyon below mine. 1402 Comment
  RSA249769  Salvia dorrii var. pilosa Robert F. Thorne, C. W. Tilforth 1973-4-20 42986 Los Angeles San Gabriel Mountains. 1143 Comment
  RSA251971  Salvia dorrii var. pilosa Robert F. Thorne, C. W. Tilforth 1973-5-30 43609 San Bernardino Eastern Mojave Desert, New York Mountains: upper portion of Caruthers Canyon. 1677 Comment
  RSA279814  Salvia dorrii var. pilosa Robert F. Thorne, C. W. Tilforth 1974-5-28 44526 San Bernardino East Mojave Desert: Clark Mountains, 1.8 miles up Coliseum Mine Road up from powerline road. 1616 Comment
  RSA191520  Salvia mellifera Robert F. Thorne 1966-4-23 36180 San Bernardino San Gabriel Mts, San Bernardino National Forest: Cajon Canyon about 1 mile w of Cajon Jct. 915 Comment
  RSA275861  Salvia mohavensis Robert F. Thorne, Walter Wisura, C. Davidson 1977-5-27 49114 San Bernardino E. Mojave Desert, Clark Mountain Range: above Pachalka Spring. [w/ precise map] 1555 Comment
  RSA334381  Salvia pachyphylla subsp. pachyphylla Robert F. Thorne, D. Stone, S. Castagnoli, Greg de Nevers 1980-9-21 54790 San Bernardino Kingston Mountains: Along summit ridge at head of Porcupine Canyon 2165 Comment
  RSA177919  Salvia sonomensis Robert F. Thorne 1965-4-20 34368 Sonoma 4 miles up Cavedale Road, and 6 miles north of Sonoma 412 Comment
  RSA250495  Sambucus caerulea R. F. Thorne, John Dourley 1967-10-10 37377 Los Angeles Cortelyou Springs 2072 Comment
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Aug 29 2011
  SD117445  Sambucus nigra subsp. caerulea Robert F. Thorne, L. DeBuhr, J. Dourley 1974-7-11 44799 Inyo Death Valley National Monument; Panimint Mountains, Wildrose Canyon near mouth of Thorndyke Canyon 2289 Comment
  GH386225  Sambucus racemosa R. F. Thorne 1965-4-21 34410 Unknown Point Reyes National Seashore Comment
  RSA306837  Sanicula arguta R. F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52719 Santa Barbara San Miguel Island. Near airstrip on west side of island. 122 Comment
  RSA362025  Sanicula arguta R. F. Thorne, C. W. Tilforth 1976-4-16 47618 Santa Barbara Santa Cruz Island. In ravines S of airfield in Central Valley. 152 Comment
  UC1302887  Sanicula arguta Robert F. Thorne and P. C. Everett 1964-2-6 33294 Los Angeles above Fourth of July cove (Santa Catalina Island); Santa Catalina Island 30 Comment
  RSA177985  Sanicula bipinnatifida R. F. Thorne 1965-4-20 34341 Sonoma Parker Hill Rd, 2.5 miles N of Santa Rosa and 1 mile N of Sonoma County Hospital. 107 Comment
  RSA249824  Sarcodes sanguinea R. F. Thorne, C. W. Tilforth, J. P. Simon 1969-6-24 38122 Riverside San Bernardino National Forest, San Jacinto Mountains.: Above and in James Reserve. 1677 Comment
  RSA363653  Saxifraga californica R. F. Thorne, C. W. Tilforth 1976-4-13 47442 Santa Barbara Santa Cruz Island. Ridge S of Central Valley about 1/2 mile WSW of Laboratory 152 Comment
  RSA760537  Saxifraga ferruginea R. F. Thorne, Frederick W. Oettinger 1969-8-4 63360 Siskiyou Klamath National Forest, Salmon Mountains, Marble Mountain Wilderness Area, high lake basins in the vicinity of English Peak Comment
  RSA191776  Saxifraga odontoloma R. F. Thorne, J. Henrickson 1963-8-9 33000 Mono 9 miles W of Sonora Junction, along Leavitt Creek, Toiyabe National Forest. 2713 Comment
  RSA190896  Schedonorus arundinaceus R. F. Thorne 1967-5-18 36861 Los Angeles Santa Catalina Island: Middle Bulrush Canyon 244 Comment
  RSA640282  Schismus arabicus R. F. Thorne 1971-5-18 41363 Los Angeles Santa Catalina Island: White's Landing. 30 Comment
  SBBG31053  Schismus arabicus R. F. Thorne with P. C. Everett 1965-5-10 34455 Los Angeles around Echo Lake 411 Comment
  UCD92928  Schismus arabicus Robert F. Thorne 1966-6-2 36525 Los Angeles Santa Catalina Island.Between Moonstone and White Coves. 30 Comment
  RSA307130  Schismus arabicus R. F. Thorne, B. Prigge 1979-5-10 52795 San Bernardino Along Crowder Creek 1 mile east of Cajon Junction on I-15. 976 Comment
  RSA636113  Schismus barbatus R. F. Thorne 1974-5-2 45311 San Bernardino Providence Mountains: East slope; Clipper Valley at junction of Black Canyon and Essex Roads. 914 Comment
  SD204752  Schoenoplectus acutus R. F. Thorne, R. K. Benjamin; Tim Krantz 1982-8-20 55079 San Bernardino San Bernardino Mountains region: San Bernardino National Forest, Cushenbury Springs on property of Kaiser Cement Company, lower end of Cjushenbury Grade, north slope of San Bernardino Mountains. 1220 Comment
  RSA316287  Scirpus microcarpus Robert F. Thorne, B. A. Prigge, Kay Wright, R. K. Benjamin 1981-6-4 54886 San Bernardino San Bernardino Mountains: Marshy area below Cedar Springs Dam at headwaters of Mojave River, north slope of San Bernardino Mountains. 915 Comment
  GH395225  Scrophularia californica R. F. Thorne, E. W. Lathrop & G. Marshs 1977-5-4 49805 Unknown Santa Ana Mountains: Trabuco Canyon Comment
  UC1518632  Scrophularia californica subsp. floribunda Robert F. Thorne, Drs. Fosberg, Sachet, and Herbst 1983-4-23 55485 Riverside 4 mi n Whitewater Post Office (along Whtiewater River where road crosses river below fish hatchery); San Bernardino Mts 640 Comment
  UCR36059  Scrophularia californica subsp. floribunda R. F. Thorne, C. W. Tilforth, B. A. Prigge, et al. 1979-5-22 52936 San Bernardino Mojave Desert/San Bernardino Mtns., Slopes on north side of mountains, near and along Arrastre Creek in Arrastre Canyon, 4.5 miles south of Deadman Pt. 1128 Comment
  UCR40135  Scutellaria siphocampyloides R. F. Thorne, C. W. Tilforth, John Little 1979-6-15 53134 San Bernardino San Bernardino Mountains, along Caribou Creek in Van Dusen Canyon, 1.6 mi north of the junction with Hwy 38 in Big Bear City 2226 Comment
  UCR228154  Sedum obtusatum R. F. Thorne 1963-8-10 33188 Tuolumne Sierra Nevada Mtns., Stanislaus National Forest, along Deadman's Creek, 4.2 mi west of Sonora Pass 2439 Comment
  RSA339674  Selaginella bigelovii Robert F. Thorne, W. A. Tilforth 1980-5-28 54219 Riverside Along Whitewater River, ca. 3.2 miles N of Whitewater Post Office and Hwy 10. Comment
  UCR177716  Selaginella watsonii R. F. Thorne, Christopher Davidson, W. Wisura, Lois Goodman, T. P. Krantz 1977-7-20 49857 San Bernardino San Bernardino Mtns., San Gorgonio Wilderness: San Gorgonio Mtn near junction of Sky High and Summit Ridge Trails 3415 Comment
  RSA0034507  Senecio R. F. Thorne, J. Henrickson 1963-8-9 32937 Mono Along Leavitt Creek; 9 miles W of Sonora Junction, Toiyabe National Forest. 2712 Comment
  RSA279844  Senecio douglasii var. monoensis R. F. Thorne, C. W. Tilforth 1974-5-29 44561 Inyo Death Valley National Monument, gravelly floor of Titus Canyon below Leadfield 1113 Comment
  RSA226024  Senecio flaccidus var. douglasii R. F. Thorne, C. W. Tilforth 1971-6-29 40696 Los Angeles San Gabriel Mountains, Angles National Forest: ca. 2.2 miles down Aliso Canyon from junction with Angeles Forest Road. 1037 Comment
  RSA788808  Senecio fremontii var. occidentalis R. F. Thorne, Christopher Davidson, Walter Wisura, Lois Goodman, Timothy P. Krantz 1977-7-19 49851 -B San Bernardino San Bernardino Mountains, San Gorgonio Wilderness: Along Sky High Trail northeast of San Gorgonio Summit. 3110 Comment
  RSA177787  Senecio lyonii R. F. Thorne, Percy C. Everett 1965-5-11 34548 Los Angeles Santa Catalina Island, about halfway between Little Harbor and Isthmus Cove 152 Comment
  UC1518675  Senecio lyonii Robert F. Thorne 1973-4-12 42902 Los Angeles China Point, at end of road San Clemente Island 15 Comment
  LA103756  Senna armata Robert F. Thorne; C. W. Tilforth 1973-6-1 43834 Inyo Kingston Range, along road W of Crystal Springs Mine 1371 Comment
  HSC65704  Setaria parviflora R. F. Thorne, C. W. Tilforth, B. A. Prigge 1977-10-29 50702 San Bernardino E. Mojave Desert, Providence Mtns: Canyon above Bonanza King Mine. 1402 Comment
  RSA0011823  Shepherdia argentea R. F. Thorne, Larry E. DeBuhr 1975-8-23 47283 Mono Mono Lake: Above W end of lake along Hwy 395. Comment
  GH379851  Sibara rosulata R. F. Thorne & C. W. Tilforth 1973-3-8 42517 Unknown Death Valley National Monument: Furnace Creek Wash below Travertine Springs, c. 1 mi. ESE of Furnace Creek Inn (Hwy 190) 45 Comment
  UC1949955  Sidotheca trilobata R. F. Thorne, W. Wisura, D. Mitchener 1982-1 55191 Riverside Peninsular Ranges; Santa Ana Mountains region: Cleveland National Forest, along Main Divide Truck Road. Comment
  RSA191674  Silene antirrhina R. F. Thorne 1965-3-26 35600 Santa Barbara Santa Ynez Mountains, Along Highway 154 SE from San Marcos Pass at high voltage power line 305 Comment
  RSA248874  Silene antirrhina R. F. Thorne 1973-4-12 42971 Los Angeles San Clemente Island, large canyon S of Mosquito Cove, N of Chenity. 274 Comment
  RSA187737  Silene gallica R. F. Thorne 1966-4-5 35828 Los Angeles Santa Catalina Island: Cape Canyon near grove of Quercus tomentella. 274 Comment
  UCD98696  Silene gallica Robert F. Thorne; Reed Rollins, Doug Propst, R. Carolin 1967-3-18 36730 Los Angeles Santa Catalina Island; Salta Verde, approximately N of Salta Verde Point. Comment
  RSA229943  Silene laciniata subsp. major R. F. Thorne 1971-6-5 39795 San Bernardino San Gabriel Mountains. San Bernardino National Forest: San Sevaine Road. 1159 Comment
  RSA230037  Silene laciniata subsp. major R. F. Thorne, C. W. Tilforth 1969-6-26 38166 San Bernardino San Gabriel Mountains: San Bernardino National Forest. Tributary to Lytle Creek Canyon near to mouth. 762 Comment
  SD245326  Silene laciniata subsp. major Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49595 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA342014  Silene parishii R. F. Thorne, Walter Wisura 1979-8-24 53662 San Bernardino San Bernardino Mountains-Holocomb Valley: Along Holocomb Valley Road W of Doble Mine at head of Chicopee Canyon 2226 Comment
  RSA229093  Silene verecunda subsp. platyota R. F. Thorne, C. W. Tilforth 1971-6-30 40757 Los Angeles Angeles National Forest: c. 0.3 mile below Alder Saddle along a dry branch of the S Fork of Little Rock Creek. 1616 Comment
  RSA229108  Silene verecunda subsp. platyota R. F. Thorne, C. W. Tilforth, John Dourley 1969-7-29 38879 Los Angeles Near Lodgepole Picnic ground at headwaters of Dorr Canyon, N slope of Throop Peak, above Angeles Crest Hwy., 1.2 mi. SE of Dawson saddle. 2332 Comment
  UC1951322  Simmondsia chinensis Robert F. Thorne 1986-1 62096 Riverside Comment
  RSA188274  Sinapis arvensis R. F. Thorne 1966-6-1 36466 Los Angeles Pebbly Beach terminal, Santa Catalina Island. 6 Comment
  RSA797658  Sinapis arvensis R. F. Thorne, E. W. Lathrop 1977-5-18 49761 Orange Santa Ana Mountains: at head of Trabuco Canyon Trail Comment
  SBBG31368  Sisymbrium irio R. F. Thorne 1966-4-4 35749 Los Angeles isthmus 12 Comment
  RSA210837  Sium suave R. F. Thorne, C. W. Tilforth 1969-9-4 39050 Modoc Along N Fork of Pit River, 11.8 miles N of Alturas along Highway 395. 1372 Comment
  RSA167822B  Solanum douglasii Robert F. Thorne, Percy C. Everett 1964-2-7 33466 Los Angeles Lower end of Pebbly Beach Canyon, E end of Santa Catalina Island. 76 Comment
  RSA187929  Solanum douglasii Robert F. Thorne 1966-4-28 36247 Los Angeles Santa Catalina Island. Margin of deep gully, Hay Press area. 427 Comment
  SD69442  Solanum douglasii Robert F. Thorne 1966-4-28 36247 Los Angeles Santa Catalina Island: margin of deep gully, Hay Press area 427 Comment
  CATA2573  Solanum douglasii Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-4-30 52661 Santa Barbara San Miguel Island: Found in ravines above and west of Ranger Station in north-trending canyon 121 Comment
  UCD126928  Solanum douglasii Robert F. Thorne; P. C. Everett 1964-2-7 33466 Los Angeles lower end of Pebbly Beach Canyon, east end of Santa Catalina Island. 76 Comment
  RSA302520  Solanum umbelliferum Robert F. Thorne, C. W. Tilforth, John Little 1979-6-15 53136 San Bernardino Along Caribou Creek in Van Dusen Canyon, 1.8 mi. North of junction with Hwy 38 in Big Bear City. 2165 Comment
  UC1409018  Solanum umbelliferum Mae Z. Thorne 1971-6-9 40965 San Bernardino Cucamonga Canyon along truck trail, San Bernardino National Forest Cucamonga Canyon; San Gabriel Mountains, San Bernardino National Forest, Cucam 792 Comment
  UC1409151  Solanum umbelliferum Robert F. Thorne and E. Lathrop 1969-6-6 39334 Riverside Santa Rosa Plateau, Rancho California Rancho California; Santa Rosa Plateau, Rancho California 609 Comment
  RSA191290  Solanum umbelliferum Robert F. Thorne, Percy C. Everett 1967-6-7 36937 Tulare Along N fork of middle fork of Tule River, 2.4 mi up Camp Wishon Rd from power plant. 1159 Comment
  NY820716  Solanum wallacei R. F. Thorne 1976-4-12 47397 Santa Barbara Santa Cruz Island: Central Valley at Biological Laboratory, ca. 3/4 mi. W of Stanton Ranch 76 Comment
  RSA187749  Solanum wallacei Robert F. Thorne 1966-4-5 35798 Los Angeles Santa Catalina Island. North slope of Black Jack Mountain, 1/8 mile down road to White's Landing 412 Comment
  UCR227643  Solanum wallacei var. clokeyi R. F. Thorne, Percy C. Everett 1967-4-17 36799 Santa Barbara Channel Islands; Santa Cruz Island, Sobrante 137 Comment
  SD90218  Solanum xanti Robert F. Thorne, E. Lathrop 1969-6-6 39334 Riverside Santa Rosa Plateau; Rancho California 609 Comment
  RSA188584  Solidago californica R. F. Thorne 1965-8-30 35432 San Bernardino San Gabriel Mountains: Angeles National Forest, Columbine Spring about 3 miles up Icehouse Canyon 2043 Comment
  RSA0051386  Solidago californica Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49600 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UC1409170  Solidago spathulata Robert F. Thorne and P. Everett 1965-8-5 35164 Humboldt Samoa Dunes 3 Comment
  RSA286993  Sonchus oleraceus R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-28 48956 Santa Barbara Santa Rosa Island: E end, S of Beechers Bay, W of Southeast Anchorage Comment
  CATA2796  Sonchus oleraceus Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52744 Santa Barbara San Miguel Island: On dry, grassy lake bed near airstrip on west side of island 121 Comment
  RSA246606  Sparganium angustifolium Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42363 Sierra Plumas National Forest: Shallow water of Snag Lake. 2058 Comment
  RSA369518  Sparganium natans Robert F. Thorne, Larry E. DeBuhr 1975-8-23 47221 El Dorado Grass Lake: Just N of Luther Pass. 2348 Comment
  SBBG119854  Spergularia bocconi R. F. Thorne, J. Dourley, W. Wisura 1979-4-25 52611 Santa Barbara Prisoners Harbor 1 Comment
  CAS-BOT-BC390136  Spergularia bocconi Robert F. Thorne 1973-4-11 42799 a Los Angeles San Clemente Island: plateau in Middle Ranch area at head of Middle Ranch Canyon 426 Comment
  RSA248868  Spergularia macrotheca R. F. Thorne 1973-4-11 42883 Los Angeles San Clemente Island: dunes near Flasher, NW part of island. 3 Comment
  RSA0097832  Spergularia macrotheca R. F. Thorne 1957-8-29 18939 Monterey Monterey Peninsula. Comment
  RSA0098163  Spergularia macrotheca R. F. Thorne, C. W. Tilforth, Bob Given 1979-4-30 52709 Santa Barbara San Miguel Island. Cuyler Harbor near seepage. 3 Comment
  RSA0098413  Spergularia macrotheca var. macrotheca R. F. Thorne, C. W. Tilforth 1979-4-3 52383 Ventura San Nicolas Island. Bluffs, dunes, and beaches from road to clayey-sandy bluffs and dunes, elev. ca. 40 ft. above bluff to 15 ft. at dunes. 5 Comment
  RSA0098504  Spergularia salina R. F. Thorne, P. A. Munz, E. W. Lathrop 1968-5-8 37611 Riverside Lake Elsinore: behind levee at SE end of Lake Elsinore, ca. 1 mile S of Elsinore. Comment
  SD107933  Spergularia villosa Robert F. Thorne, G. Wallace and M. Haefs 1977-4-29 49003 Santa Barbara Santa Rosa Isand, north slope of Black Mountain near road on dry, pastured, rocky plateau. 214 Comment
  RSA0084135  Sphaeralcea ambigua subsp. ambigua Robert F. Thorne, C. W. Tilforth 1974-5-29 44548 Inyo Death Valley National Monument: Upper end of Talus Canyon below Leadfield. 1143 Comment
  RSA359616  Sphaeromeria cana R. F. Thorne, Larry E. DeBuhr, John Dourley 1974-7-10 44831 Inyo Death Valley National Monument, Panamint Mts.: Telescope Peak, summit ridge to S.peak in rocky outcrops 3354 Comment
  RSA246630  Spiraea densiflora Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-19 42286 Nevada Tahoe National Forest; Willow Spring 2.5 miles W of west end of Bowman Lake and 1 mile S of road to Graniteville. 1738 Comment
  RSA252502  Spiraea densiflora Robert F. Thorne, C. W. Tilforth 1969-9-6 39218 Sierra N margin of Gold Lake. 1951 Comment
  RSA191890  Stachys bullata Robert F. Thorne, P. C. Everett 1963-6-7 32169 San Luis Obispo Near TV tower ca 6.4 miles NW along Cuesta Ridge Road from Cuesta Pass Freeway. 610 Comment
  GH379917  Stanleya pinnata R. F. Thorne & A. Schmida 1978-5-5 51836 Unknown Cushenbury Canyon: Lower end of Canyon, N slope of San Bernardino Mountains Comment
  RSA284268  Stanleya pinnata R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1976-10-29 47942 San Bernardino E. Mohave Desert, New York Mts. Near mouth of keystone Canyon. 1662 Comment
  CAS-BOT-BC60984  Stanleya pinnata var. pinnata Robert F. Thorne; C. W. Tilforth 1969-6-26 38187 San Bernardino San Gabriel Mountains, San Bernardino National Forest. Near junction of Stover Canyon with Lone Pine Canyon. 1828 Comment
  SD90365  Stanleya pinnata var. pinnata Robert F. Thorne, C. W. Tilforth 1969-6-26 38187 San Bernardino San Gabriel Mountains; San Bernardino National Forest: Near junction of Stover Canyon with Lone Pine Canyon. 1830 Comment
  RSA0033522  Stellaria crispa Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47796 San Bernardino San Bernardino Mts: Bluff Lake, ca. 1.5 mi due S of W end of Big Bear Lake. 2316 Comment
  RSA291838  Stellaria longipes R. F. Thorne, M. Z. Thorne, Mary DeDecker 1969-7-22 38772 Inyo Sierra Nevada, E slope, Onion Valley. 2774 Comment
  RSA381275  Stellaria longipes R. F. Thorne, Larry E. DeBuhr, C. Davidson, C. W. Tilforth 1976-7-14 47897 San Bernardino San Bernardino National Forest. ca. 2 miles along Mill Creek Road and 2N10 from Coldbrook Campground 2226 Comment
  UCD99438  Stellaria media Robert F. Thorne; J. Henrickson 1963-5-5 32288 Los Angeles near mouth of Cobal Canyon, foothills of San Gabriel Mts., 4 miles N of Claremont. 518 Comment
  UCD99440  Stellaria media R. F. Thorne; C. W. Tilforth, et al. 12 and 13 Jul 1979 53376 San Bernardino at Skyland near Crestline at headwaters of Waterman Canyon. Comment
  RSA332464  Stellaria media R. F. Thorne 1984-5-4 58347 Santa Barbara Santa Cruz Island. Behind Prisoners Harbor Camp. Comment
  SD123938  Stellaria nitens Robert F. Thorne, John Dourley, Walter Wisura, et al. 1979-4-23 52473 Santa Barbara Santa Cruz Island: North of Red Peak toward Pelican Bau on shaded north-facing slopes moist with seepage. 305 Comment
  GH443037  Stephanomeria blairii R. F. Thorne 1966-4-16 36029 Unknown San Clemente Island: canyon S of Lemon Tank, S of Nanny, NE side of island 152 Comment
  SD245293  Stephanomeria virgata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49534 Riverside Santa Ana Mountains; along Ortega Highway (74). Comment
  RSA314448  Stillingia linearifolia R. F. Thorne, Fosberg, Sachet, Herbst 1983-4-23 55444 Riverside San Bernardino Mountains: Mouth of Whitewater Canyon, east of Whitewater Post Office at south end of ridge. 412 Comment
  RSA339238  Stillingia linearifolia R. F. Thorne, Rolf Dahlgren, Gertrud Dahlgren 1979-8-23 53611 Riverside Cottonwood Springs Area Comment
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Oct 9 2010
  RSA339668  Stillingia linearifolia R. F. Thorne, C. W. Tilforth 1980-5-28 54156 Riverside San Bernardino Mountains, dry, Colorado Desert slopes, S-facing and W-facing, N-S rocky ridge at E side of Whitewater River at mouth of canyon, ca. 1/4-1/2 miles E of Whitewater Post Office. Comment
  UCD142279  Stillingia linearifolia Robert F. Thorne; S. T. Blake 1965-6-1 34713 Riverside Morongo Valley pass. 487 Comment
  SD247561  Stipa hymenoides R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, B. Tucker, R. K. Benjamin, et al 1976-10-30 48699 San Bernardino Granite Mountains, eastern Mojave Desert: Southern margin of Kelso Dunes, low sand dunes south of main, high dunes. 808 Comment
  HSC65745  Stipa parishii R. F. Thorne, Larry E. DeBuhr 1974-6-28 44774 Los Angeles Drainage of S Fork Big Rock Creek, N of Windy Spr. near Pine Hollow Picnic Area 2134 Comment
  SD90270  Stipa pulchra Robert F. Thorne 1973-4-12 42886 Los Angeles San Clemente Island; plateau near Cutlass above old dam 650 Comment
  RSA187665  Stuckenia pectinata Robert F. Thorne 1966-9-16 36709 Los Angeles Near Hay Press Reservoir, Santa Catalina Island. 412 Comment
  RSA233771  Stuckenia pectinata Robert F. Thorne, C. W. Tilforth 1969-9-8 39309 Inyo Along Hwy 395, Little Lake, S end of Rose Valley (and Owens Valley) 1021 Comment
  RSA188167  Stylocline gnaphaloides R. F. Thorne 1966-4-5 35807 Los Angeles Santa Catalina Island: W slope of Black Jack Mountain 518 Comment
  RSA0024502  Stylocline gnaphaloides R. F. Thorne 1980-4-26 54139 Los Angeles Santa Catalina Island. East slope of Blackjack Mountain, along Airport Road. Swain's Canyon Comment
  RSA305595  Stylocline gnaphaloides R. F. Thorne 1979-4-23 52460 .1 Santa Barbara Santa Cruz Island. North ridge N of Biological Station in Central Valley 91 Comment
  RSA191299  Stylomecon heterophylla Robert F. Thorne, Percy C. Everett 1967-6-8 36981 Tulare 2.1 mi NE of Milo on road to Balch Park. 701 Comment
  CAS-BOT-BC402192  Styrax redivivus R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49686 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  UCD169760  Styrax redivivus R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49686 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA177675  Suaeda taxifolia R. F. Thorne, P. Everett, K. Thorne 1965-5-11 34590 Los Angeles Santa Catalina Island. N side of N cove of Little Harbor. 5 Comment
  CAS-BOT-BC269596  Symphoricarpos albus var. laevigatus Robert F. Thorne; P. Everett 1962-10-5 31462 Monterey Greenfield Road, Carmel Valley, 13.4 miles NW of Junction with Arroyo Seco Road 548 Comment
  CAS-BOT-BC238980  Symphoricarpos rotundifolius Robert F. Thorne; J. Henrickson 1963-8-9 33002 Mono 9 miles W of Sonora Junction; along Leavitt Creek, Toiyabe National Forest 2712 Comment
  RSA225774  Symphoricarpos rotundifolius var. parishii R. F. Thorne, Selwyn Everist 1971-7-31 41101 San Bernardino Cienega near head of Coldwater Fork of Lytle Creek 2133 Comment
  RSA302529  Symphoricarpos rotundifolius var. parishii R. F. Thorne, B. A. Prigge, Mike Herter 1979-7-3 53360 San Bernardino South of Arrastre Flat at junction of 3N04 and 3N16 (Holcomb Valley Road) 2284 Comment
  RSA386842  Symphoricarpos rotundifolius var. parishii R. F. Thorne, Larry E. DeBuhr, C. Davidson, C. W. Tilforth 1976-7-15 47846 San Bernardino San Bernardino Mtns: Bluff Lake, ca. 1.5 miles due S of W end of Big Bear Lake, W of Bluff Lake. 2317 Comment
  HSC80376  Symphyotrichum ascendens R. F. Thorne, L. M. Shultz, T. P. Krantz 1980-10-3 54847 San Bernardino San Bernardino National Forest, along lower Holcomb Creek where crossed by road N from Fawnskin, N of Delamar Mtn., W of Hitchcock Ranch 2195 Comment
  UCD136550  Symphyotrichum bracteolatum Robert F. Thorne; C. W. Tilforth 1969-9-4 39047 Modoc along north fork of Pit River, 11.8 miles north of Alturas along Highway 395. 1371 Comment
  UC1536070  Symphyotrichum spathulatum Robert F. Thorne 1975-8-11 47368 San Bernardino s of, (margin of Bluff Lake) Big Bear Lake; San Bernardino Mts, Bluff Lake 2316 Comment
  RSA757501  Tamarix ramosissima Robert F. Thorne, R. K. Benjamin, Tim Krantz 1982-8-20 55081 San Bernardino San Bernardino Nat'l Forest, Cushenbury Springs, on property of Kaiser Cement Company, lower end of Cushenbury Grade, N slope of San Bernardino. Mts. 1220 Comment
  UCR245891  Tamarix ramosissima R. F. Thorne 1995-3-29 63020 Riverside Transverse Range; San Bernardino Mtns., Whitewater Canyon 600 Comment
  RSA187690  Taraxacum R. F. Thorne 1966-9-15 36698 Los Angeles Santa Catalina Island. Middle Ranch, Middle Ranch Canyon. 213 Comment
  RSA0008504  Taraxacum californicum R. F. Thorne, B. A. Prigge, C. W. Tilforth 1980-6-2 54342 San Bernardino Upper Holcomb valley: near historic log cabin at upper end of Caribou Creek. Comment
  RSA226148  Taraxacum officinale R. F. Thorne, C. W. Tilforth, John Dourley, J. Benny 1971-7-7 40888 San Bernardino San Bernardino National Forest: Lower flats of San Sevaine Cow Camp 1433 Comment
  RSA754603  Taraxacum officinale R. F. Thorne 1980-4-27 54153 Los Angeles Avalon, at boat landing 3 Comment
  RSA307332  Tauschia parishii R. F. Thorne, Barry Prigge 1979-5-10 52882 San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  RSA798543  Tauschia parishii R. F. Thorne, E. W. Lathrop 1977-5-18 49743 Orange Santa Ana Mountains: summit of Santiago Peak 1733 Comment
  UC1375339  Tauschia parishii R. F. and M. Z. Thorne 1969-7-9 38481 Los Angeles s-facing slope Table Mt. (above Big Pines Ranger Station); Angeles National Forest, San Gabriel Mts. 2118 Comment
  UCR35834  Tetracoccus ilicifolius R. F. Thorne, W. Wisura, M. Patterson, et al. 1983-7-2 56142 Inyo Panamint Mountains, Death Valley National Monument. Along Tetracoccus Ridge blocking Aguereberry Point from Death Valley 1982 Comment
  RSA167475  Tetradymia axillaris var. longispina R. F. Thorne 1963-5-17 31819 Kern 2 miles E of Onyx on Hwy 178 Comment
  RSA308054  Tetradymia axillaris var. longispina R. F. Thorne, C. W. Tilforth, B. A. Prigge, Christopher Davidson 1979-5-22 52938 San Bernardino Mojave Desert slopes on N side of San Bernardino Mountains near and along Arrastre Creek in Arrastre Canyon 4.5 air miles S of Deadman Point. 1128 Comment
  RSA336087  Tetradymia axillaris var. longispina R. F. Thorne, Avil Shmida 1978-5-5 51824 San Bernardino Cushenbury Canyon: lower end of canyon, north slope of San Bernardino Mountains. 1315 Comment
  RSA305415  Tetragonia tetragonoides R. F. Thorne, John Dourley, Walter Wisura, et al. 1979-4-25 52638 Santa Barbara Santa Cruz Island. Prisoners Harbor on north side of the island 2 Comment
  CAS-BOT-BC377021  Tetraneuris acaulis var. arizonica Robert F. Thorne; W. Wisura; C. Davidson; B. Prigge 1977-5-28 49224 San Bernardino E. San Bernardino Co. E. Mojave Desert, New York Mts: Keystone Canyon 1767 Comment
  SD82871  Thalictrum fendleri Robert F. Thorne, C. W. Tilforth, J. Dourley, J. Benny 1971-7-7 40868 San Bernardino San Gabriel Mts., San Bernardino National Forest: Grapevine Spring 1250 Comment
  UC1523533  Thalictrum fendleri var. polycarpum R. F. and M. Z. Thorne 1969-7-9 38584 Los Angeles Big Pines Angeles National Forest, San Gabriel Mts. (edge of sloping meadow) 2072 Comment
  CAS-BOT-BC180979  Thamnosma montana R. F. Thorne; C. W. Tilforth; L. DeBuhr 1976-10-29 48606 San Bernardino Cottonwood Spjrings N of mouth of Cottonwood Cyn., E. Mojave Desert, New York Mts. 1554 Comment
  RSA0057537  Thysanocarpus curvipes subsp. longistylus Robert F. Thorne, S. T. Blake 1965-6-4 34731 Fresno Above King's River Canyon, 4 mi. W of Boyden Cave. 1036 Comment
  RSA363656  Thysanocarpus laciniatus R. F. Thorne, C. W. Tilforth 1976-4-12 47429 Santa Barbara Santa Cruz Island. Central Valley, arroyo N of Biological Station; 122 Comment
  RSA310774  Tidestromia oblongifolia R. F. Thorne, Walter Wisura, Mark Patterson, et al. 1983-7-1 56071 Inyo Panamint Mountains: Lower Wildrose Spring Wash, Death Valley National Monument, in gravelly wash along highway about 3.5 miles SW of Wildrose Campground 976 Comment
  RSA336273  Tiquilia palmeri R. F. Thorne 1978-4-29 52099 Imperial Near Salton Sea: along Hwy 86 near entrance to Salton Sea Naval Base, SSE of Salton Sea -61 Comment
  RSA339771  Tofieldia glutinosa subsp. occidentalis Robert F. Thorne, Walter Wisura, Dave Michener, Jim Shevock 53738 Tulare Moses Mountain. 2104 Comment
  RSA760959  Tofieldia occidentalis subsp. occidentalis Robert F. Thorne, Frederick W. Oettinger 1969-8-4 63387 Siskiyou Klamath National Forest, Salmon Mountains, Marble Mountain Wilderness Area, high lake basins in the vicinity of English Peak 1890 Comment
  RSA191328  Torilis nodosa R. F. Thorne, P. Everett 1967-6-9 37061 Tulare Along North Fork of Kaweah River, ca. 4 miles NNE of Kaweah. 762 Comment
  RSA247059  Tribulus terrestris Robert F. Thorne, C. W. Tilforth 1973-6-19 43952 San Bernardino Providence Mountains: N end of Mts. c. 7 mi SE of Kelso (by road); upper part of Globe canyon below the Globe mine 1463 Comment
  RSA226947  Trichostema lanatum Robert F. Thorne, C. W. Tilforth 1971-6-17 39968 Los Angeles San Gabriel Mountains, Angeles National Forest: 2 mi. up Lower Tujunga Rd. from Forestry Headquarters 457 Comment
  RSA249855  Trichostema lanatum Robert F. Thorne 1969-6-24 38131 Riverside San Jacinto Mountains: San Bernardino National Forest. Hill north of James Reserve and Lake Fulmor 1677 Comment
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  SBBG31070  Trichostema lanceolatum R. F. Thorne 1966-9-15 36682 Los Angeles above and NW of Parson's Landing 121 Comment
  RSA314526  Tridens muticus R. F. Thorne, Walter Wisura, B. Busenberg, R. K. Benjamin 1983-5-6 55531 Inyo Funeral Mountains: Rocky slopes along wash at upper end of Red Ampitheater 951 Comment
  RSA187933  Trifolium depauperatum var. amplectens Robert F. Thorne 1966-4-4 35772 Los Angeles Santa Catalina Island. Blue Cavern Point, NE of Isthmus Cove. 30 Comment
  RSA251510  Trifolium depauperatum var. amplectens Robert F. Thorne 1973-4-11 42823 Los Angeles San Clemente Island: upper part of Norton Canyon. 335 Comment
  RSA305612  Trifolium fucatum Robert F. Thorne, John Dourley, Walter Wisura 1979-4-24 52539 Santa Barbara Santa Cruz Island: Fraser Point northwest tip of island. 15 Comment
  RSA232800  Trifolium gracilentum Robert F. Thorne 1966-4-17 36086 Los Angeles San Clemente Island, near reservoirs between Boulder and Horton, NE side of island. 488 Comment
  RSA233393  Trifolium gracilentum var. palmeri R. F. Thorne 1966-4-16 36057 Los Angeles San Clemente Island, canyon below Lemon Tank, near dump, south of Nanny, northeast of island 183 Comment
  RSA338570  Trifolium longipes subsp. atrorubens Robert F. Thorne, Tim P. Krantz 1982-8-20 55149 San Bernardino San Bernardino National Forest: Lower Holcomb Creek Botanical Area, near creek where crossed by road N from Fawnskin, N of Delamar Mt., W of Hitchcock Ranch 2195 Comment
  RSA191081  Trifolium microcephalum R. F. Thorne 1967-7-2 37220 San Bernardino San Antonio Canyon. Chapman Ranch above Mt. Baldy Village. 1356 Comment
  RSA284050  Trifolium microcephalum Robert F. Thorne 1977-4-30 48746 Santa Barbara Santa Rosa Island: Canada lobos 30 Comment
  RSA760322  Trifolium microcephalum Robert F. Thorne, E. W. Lathrop, S. Beckstrom-Sternberg, B. Martin 1982-05 55218 Riverside SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road. 730 Comment
  UCR48171  Trifolium monanthum var. grantianum R. F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-15 47858 San Bernardino San Bernardino Mtns., Bluff Lake, c. 1.5 mi due south of W end of Big Bear Lake 2317 Comment
  SEINET10485946  Trifolium monoense Robert F. Thorne 1969-7-20 Thorne 38634 Mono White mts, inyo ntl forest, alpine fell field near headwaters of cottonwood Creek, 1.5 mi s of mcafee meadows, with androsace septentrionalis subumbellata, Arabis and draba sppl, heuchera duranii, astragalus kentrophyta implexus, Erigeron comopostius discoideus, rumex paucifolius graciliscens, carex Eleocharis, lewisia pygaea gladulosa, etc. 3658 Comment
  RSA639643  Trifolium variegatum Robert F. Thorne, James Henrickson, K. Thorne 1963-8-9 32994 Mono 9 miles W of Sonora Junction; along Leavitt Creek; Toiyabe National Forest. 2713 Comment
  RSA639580  Trifolium variegatum var. variegatum Robert F. Thorne, J. P. Simon, Carlos Munoz, K. Thorne 1969-6-18 38042 Tulare On steep S bank of Left Fork of Kaweah River, ca. 10 mi. from Hwy to Sequoia National Park 762 Comment
  RSA333687  Trifolium willdenovii Robert F. Thorne, Barry A. Prigge, C. W. Tilforth 1980-6-2 54294 San Bernardino Near Mojave River, S of Hesperia and 5.2 miles N of junction of Silverwood Lake and Hesperia roads. 976 Comment
  RSA337827  Trifolium wormskioldii Robert F. Thorne, C. W. Tilforth 1979-7-13 53520 San Bernardino San Bernardino Mts: San Bernardino National Forest, just W of Holcomb Valley Campground. 2248 Comment
  UC1409179  Triglochin maritima Robert F. Thorne and P. Everett 1965-8-7 35214 Humboldt Samoa Penisula 0 Comment
  SD127565  Triglochin scilloides Robert F. Thorne 1973-5-23 43841 Riverside Santa Rosa Plateau, wet or already dessicated margin of large vernal pool, north side of Mesa de Colorado. 609 Comment
  UCD138218  Triglochin scilloides Robert F. Thorne; P. Everett 1963-6-8 32191 Monterey 2 miles south of Jolon. Comment
  RSA760934  Trillium ovatum subsp. oettingeri Robert F. Thorne, Frederick W. Oettinger 1969-8-4 63359 Siskiyou Klamath National Forest, Salmon Mountains, Marble Mountain Wilderness Area, high lake basins in the vicinity of English Peak Comment
  RSA226660  Trisetum spicatum R. F. Thorne, John Dourley, Selwyn Everist 1971-8-3 41185 Mono Sierra Nevada, Inyo National Forest: Cold Water Campground, Along Cold Water Creek 2744 Comment
  RSA167776  Triteleia ixioides subsp. scabra Robert F. Thorne, Percy C. Everett 1964-4-15 33679 Mariposa Along Hwy 49, 2.3 miles W of Mariposa. 579 Comment
  RSA249580  Triteleia laxa Robert F. Thorne, S. T. Blake 1965-6-4 34789 Fresno Sequoia National Forest. Above King s River along Hwy. 180. 1494 Comment
  RSA356027  Triticum aestivum R. F. Thorne 1973-3-14 42652 Los Angeles San Dimas Canyon near its mouth. Comment
  RSA167674  Trixis californica R. F. Thorne, Robert L. Rutherford 1964-4-11 33608 Imperial Gables Wash, ca 3 miles W of Imperial Gables, Chocolate Mts. 396 Comment
  SBBG31309  Tropaeolum majus R. F. Thorne with P. C. Everett 1965-6-22 34867 Los Angeles just S of Lookout Pt; apparently escaped from cultivation 30 Comment
  RSA642740  Tropidocarpum gracile R. F. Thorne, Percy C. Everett 1963-4-19 31521 San Benito 10 miles south of Paicines. 305 Comment
  UC1348899  Turricula parryi Robert F. Thorne 35372 Los Angeles e of Camp Lupine (Prairie Fork); San Gabriel Mts., Angeles National Forest 2133 Comment
  RSA791489  Typha angustifolia Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49636 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA187785  Typha domingensis Robert F. Thorne 1966-9-15 36676 Los Angeles Santa Catalina island, small marsh in depression on slopes above Parsons Landing, NW end island 46 Comment
  RSA545242  Typha domingensis Robert F. Thorne 1968-9-24 41384 a San Bernardino San Gabriel Mts. San Bernadino National Forest: Cajon Pass along stream at campground. Comment
  RSA239282  Typha latifolia Robert F. Thorne, Larry E. DeBuhr, C. W. Tilforth 1972-9-20 42314 Plumas Plumas National Forest: Snake Lake 4 miles NW of Quincy 1220 Comment
  SBBG31104  Typha latifolia R. F. Thorne 1966-9-14 36642 Los Angeles behind dunes at Ben Weston Beach 3 Comment
  RSA173991  Umbellularia californica R. F. Thorne, P. C. Everett 1962-10-4 31434 Monterey Along Salmon Creek in SW corner of the county. 91 Comment
  CATA2808  Uropappus lindleyi Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48776 Santa Barbara Santa Rosa Island: Canada Lobos 45 Comment
  CATA2081  Urtica urens Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48727 Santa Barbara Santa Rosa Island: Canada Lobos, near upper end 60 Comment
  RSA286390  Utricularia vulgaris subsp. macrorhiza Robert F. Thorne 1974-7-27 44982 Lake Boggs Lake: N of Harrington Flat Road. 915 Comment
  RSA233732  Utricularia vulgaris subsp. macrorhiza Robert F. Thorne, C. W. Tilforth 1969-9-7 39302 El Dorado Grass Lake, S of Highway 89, 1/2 mile W of Luther Pass. 2317 Comment
  RSA369524  Utricularia vulgaris subsp. macrorhiza Robert F. Thorne, Larry E. DeBuhr 1975-8-23 47267 El Dorado Grass Lake Valley: S end just N of Luther Pass. 2348 Comment
  RSA239261  Vaccinium uliginosum subsp. occidentale R. F. Thorne, Larry E. DeBuhr, C. W. Tilforth, K. Thorne 1972-9-19 42291 Nevada Tahoe National Forest; Willow Spring 2.5 miles W of west end of Bowman Lake and 1 mile S of road to Graniteville. 1738 Comment
  RSA286291  Vaccinium uliginosum subsp. occidentale R. F. Thorne 1974-7-30 45033 Sierra Tahoe National Forest: Goose, Haven and Snag Lake areas. 2058 Comment
  RSA246944  Vancouveria planipetala R. F. Thorne, P. Everett 1965-8-5 35134 a Humboldt Mt. Chamisal. 549 Comment
  RSA233500  Verbascum thapsus Robert F. Thorne, C. W. Tilforth 1972-6-29 42152 San Bernardino San Gabriel Mountains, San Bernardino National Forest: along Cajon Creek near Cajon Campground in Cajon Canyon 838 Comment
  SD69572  Verbena lasiostachys var. scabrida Robert F. Thorne 1966-9-14 36670 Los Angeles Santa Catalina Island: along stream where Isthmus road crosses Cottonwood Creek 29 Comment
  RSA188287  Verbena robusta Robert F. Thorne 1966-6-1 36508 Los Angeles Santa Catalina Island. Along stream at lower end of Cape Canyon above junction with Middle Rancho Canyon. 236 Comment
  RSA386860  Veronica americana Robert F. Thorne, Larry E. DeBuhr, Christopher Davidson, C. W. Tilforth 1976-7-14 47874 San Bernardino San Bernardino National Forest. ca. 2 miles along Mill Creek Road and 2N10 from Coldbrook Campground. 2226 Comment
  UC1531161  Veronica anagallis-aquatica Robert F. Thorne, B. Prigge and C. W. Tilforth Jun 2 1980-Jun 3 1980 54284 San Bernardino near Mojave River (s of Hesperia and 5.2 mi n of junction of Silverwood Lake and Hesperia Roads); San Bernardino Mountains 975 Comment
  RSA760324  Veronica peregrina subsp. xalapensis Robert F. Thorne, E. W. Lathrop, S. Beckstrom-Sternberg, B. Martin 1982-05 55216 Riverside SW of Murrieta. Santa Rosa Plateau, Mesa de la Punta near S. edge of plateau, approached from De Luz road. 730 Comment
  UC1531177  Veronica peregrina subsp. xalapensis R. F. Thorne, C. W. Tilforth and John Little 1979-6-14 53087 San Bernardino w of Big Bear City (at e end on s side of Big Bear Lake); San Bernardino Mountains, Big Bear Lake 2057 Comment
  RSA730595  Veronica serpyllifolia subsp. humifusa Robert F. Thorne, Percy C. Everett 1965-8-8 35263 a Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  RSA751012  Vicia americana var. americana Robert F. Thorne, C. W. Tilforth, Bob Given 1979-4-30 52667 Santa Barbara Ranger Station down to Cuyler Harbor Dunes. 15 Comment
  RSA0023259  Vicia hassei Robert F. Thorne 1980-4-27 54150 Los Angeles Santa Catalina Island. From Blackjack Camp into Cape Canyon Comment
  RSA755057  Vicia sativa Robert F. Thorne, Percy C. Everett 1963-6-12 32254 San Luis Obispo Along roadside on sandy roadbank at Arroyo de la Cruz Creek. Comment
  RSA332419  Vinca major R. F. Thorne 1984-5-6 58411 Santa Barbara Santa Cruz Island. Prisoner s Bay Canyon behind Prisoners Harbor Camp 5 Comment
  SEINET12320612  Vinca major R. F. Thorne 1971-1 41490 Los Angeles San Gabriel Mts., Cobal Canyon: 3mi N of Claremont 503 Comment
  RSA287778  Viola pedunculata Robert F. Thorne, Gary D. Wallace, M. Haefs 1977-4-28 48814 Santa Barbara Santa Rosa Island. Box Canyon. SW of SE Anchorage 76 Comment
  RSA308030  Viola purpurea subsp. xerophyta Robert F. Thorne, C. W. Tilforth, Barry A. Prigge, C. Davidson 1979-5-22 52992 San Bernardino Near relay station on Grapevine Canyon Road ca. 4 air miles south of Fifteenmile Point. 1585 Comment
  SD90330  Vitis californica Robert F. Thorne, J. P. Simon & Carlos Munoz P. 1969-6-18 38050 Tulare steep S bank of Left Fork of Kaweah River, ca. 10 mi. from Hey. To Sequoia National Park 762 Comment
  HSC66206  Vulpia microstachys R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-13 49331 San Bernardino E Mojave Desert, New York Mtns.; Upper Caruthers Canyon towards peak W from Giant Ledge Mine 2012 Comment
  RSA249760  Vulpia microstachys var. microstachys R. F. Thorne 1973-4-25 43388 Los Angeles San Gabriel Mountains, Mojave Desert Slope: 1/4 mi N of Bob's Gap, 3.5 mi S of Llano, N slope of Holcomb Ridge. 1159 Comment
  RSA730024  Vulpia microstachys var. pauciflora R. F. Thorne, S. T. Blake 1965-6-4 34780 Fresno Sequoia National Forest: Above King's River along Hwy 180. 1494 Comment
  SEINET7295282 Image available Vulpia microstachys var. pauciflora Robert F. Thorne 1969-1 38000 San Bernardino San Gabriel Mts., Angeles National Forest; Chapman Ranch above Baldy Village, San Antonio Canyon 1359 Comment
  UCD94595  Vulpia microstachys var. pauciflora Robert F. Thorne 1967-5-18 36865 Los Angeles Santa Catalina Island, Salta Verde, above Wild Boar Gully (Cercocarpus Arroyo.) 213 Comment
  RSA198986  Vulpia myuros R. F. Thorne, Philip A. Munz, E. Lathrop 1968-5-8 37585 Riverside Santa Rosa Plateau: on Mesa de Colorado, Rancho California 671 Comment
  RSA773233  Vulpia myuros R. F. Thorne 1968-4-4 37462 San Bernardino San Gabriel Mountains: San Bernardino National Forest; Just above Lytle Creek Ranger Station Comment
  RSA233467  Vulpia myuros R. F. Thorne 1969-5-29 38001 San Bernardino Angeles National Forest, at junction of Evey Canyon with San Antonio Canyon. 701 Comment
  RSA239884  Vulpia myuros var. hirsuta R. F. Thorne, C. W. Tilforth, et al. 1973-3-8 42565 Inyo Death Valley National Monument: At Jubilee Pass. 402 Comment
  RSA252958  Vulpia myuros var. hirsuta R. F. Thorne, G. Wallace 1973-4-24 43418 Los Angeles Junction of Pallett Creek and Longview Roads: ca. 4 mi S of Pearblossom 1174 Comment
  RSA343101  Vulpia myuros var. hirsuta R. F. Thorne, Walter Wisura, Earl Lathrop, Sara Meury 1985-5-18 60635 Riverside Santa Rosa Plateau: Cole Canyon, near entrance to Nature Conservancy Reserve. 530 Comment
  RSA252012  Vulpia octoflora R. F. Thorne 1973-4-28 43218 San Bernardino Providence Mountains, canyon below Cornfield Springs, 10.9 road miles SE of Kelso. 1067 Comment
  RSA278286  Vulpia octoflora R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr, et al. 1977-5-13 49332 San Bernardino New York Mountains; Upper Caruthers Canyon towards peak W from Giant Ledge Mine 2012 Comment
  SEINET10604577  Vulpia octoflora var. glauca Robert F. Thorne, C. W. Tilforth 1979-4-3 Thorne s.n. Ventura San Nicolas Island: Sand spit and Salina at extreme E end of island 46 Comment
  RSA797256  Woodsia oregana R. F. Thorne, Walter Wisura 1977-9-17 50794 Riverside San Jacinto Mountain: slopes of peak 3171 Comment
  RSA278278  Woodsia plummerae R. F. Thorne, C. W. Tilforth, Larry E. DeBuhr 1977-5-13 49314 San Bernardino E. Mojave Desert, New York Mts: Caruthers Canyon. 1738 Comment
  RSA286214  Wyethia mollis R. F. Thorne 1974-7-31 44939 El Dorado Grass Lake road S of Meyers and N of Luther's Pass 2195 Comment
  RSA0029553  Xanthisma gracile R. F. Thorne, Avil Shmida, R. K. Benjamin, Tilforth, Prigge 1978-5-10 51347 San Bernardino New York Mountains, near junction of Ivanpah and keystone canyon roads 1494 Comment
  SBBG31206  Xanthium strumarium R. F. Thorne 1966-9-14 36668 Los Angeles Little Harbor 3 Comment
  RSA198819  Xylococcus bicolor R. F. Thorne, D. Propst 1968-5-27 37636 Los Angeles Santa Catalina Island, lower end of Middle Ranch Canyon Comment
  SBBG22057  Xylococcus bicolor R. F. Thorne, P. Everett 1963-9-26 33238 San Diego near cross on Soledad Mtn 243 Comment
  SBBG31079  Xylococcus bicolor R. F. Thorne with D. Propst 1968-5-27 37636 Los Angeles above stream in lower end of Middle Ranch Cyn Comment
  RSA279755  Xylorhiza tortifolia R. F. Thorne, C. W. Tilforth 1974-5-29 44566 Inyo Death Valley National Monument: Red Pass 1600 Comment
  RSA252892  Xylorhiza tortifolia var. tortifolia R. F. Thorne 1973-5-11 43545 Los Angeles San Gabriel Mts., Mojave Desert slope: Along Mt. Emma Road, 1/2 mi E of Little Rock Creek below the dam. 1037 Comment
  SD90577  Zannichellia palustris R. F. Thorne, E. Lathrop 1969-6-6 39342 Riverside Santa Rosa Plateau: Rancho California, shallow water of small stream 609 Comment
  RSA291861  Zannichellia palustris Robert F. Thorne 1969-7-21 38716 Inyo Owens Valley: Locust Ditch 1143 Comment
  RSA250375  Zauschneria californica subsp. latifolia Robert F. Thorne, John Dourley 1967-10-3 37268 San Bernardino Mt. Baden-Powell: N slope at Vincent Gap 2134 Comment
  GH384878  Zeltnera exaltata R. F. Thorne & C. W. Tilforth 1971-6-29 40694 Unknown San Gabriel Mts., Angeles National Forest: ca. 2.2 miles down Aliso Canyon from junction with Angeles Forest Rd., wet margins of Aliso Creek 1036 Comment
  UC2042143  Zeltnera venusta R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49576 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA0051394  Zigadenus fremontii Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49661 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  RSA177986  Zigadenus fremontii Robert F. Thorne 1965-4-20 34340 Sonoma Parker Hill Rd, 2.5 miles N of Santa Rosa and 1 mile N of Sonoma County Hospital. 107 Comment
  RSA167791B  Zostera marina Robert F. Thorne, Percy C. Everett 1964-2-7 33440 Los Angeles Washed up on beach at Avalon, Santa Catalina Island Comment



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